Is it a sin or is it morally wrong to report someone violating the law?

I don't know if it's a sin or not but aren't laws there to keep people moral so the person violating it is the ones that are "wrong" and isn't one reporting it doing a 'right' by reporting it?

I think Dr. Donna Schwontkowski has summarize the reasons well enough for the reasons why people don't want to report crimes with the following reasons. 1.Moral Dilemma People may think it’s a moral dilemma to call police. They don’t want to accuse someone without evidence and feel like they’re lacking substantial information or they don’t have proof. “One thing to remember is that the police, not private citizens, will do the investigation. In the course of an investigation, detectives will act on a statement made by a witness but an arrest is unlikely without additional statements, information and corroborating evidence. The police have to substantiate the evidence,” A police commander name Wick said. 2.Not My Business People may think it’s not their business to report crime. “However, it is THEIR business because the same burglars may return to burglarize their house next. They don’t realize they could be the next victim, and it’s happened plenty of times before. The harder you make it for the burglar or criminal, the less likely you’ll be the next victim. You make it hard for the burglar when you provide information that leads to an arrest.” With U.S. Department of Justice statistics from 2001 showing that one property crime occurs every three seconds, one burglary every 15 seconds, and one larceny theft every five seconds (with81% unsolved), who’s to say you won’t be the next victim? And if so, wouldn’t you want witnesses to report what they saw to help catch the perpetrator? “For every one person who reports a crime, there are at least 20 others who could also contribute information about what happened and help solve the crime,” Wick says. 3.It’s Not Important People may think it’s not important to report crimes. They don’t want to bother the police. “Your information is part of the puzzle being put together, along with many others. You have no way of knowing if your part may be the piece that links all the other bits of information together to solve the crime. Every piece of information, no matter how small, is important. Every witness has a different perspective on a crime and everyone’s observation is equally important.” 4.Don’t Want to Get Involved People don’t want to get involved. They feel it’s part of something bad and they only want to be associated with good things in life. They look the other way. This is similar to thinking that something may be wrong with your health but you don’t go to the doctor because you’re afraid of bad news. It may be just a minor problem, yet the stress of the situation continues to build until you finally go see the doctor. By then, it may have developed into a major problem that might have been resolved easily had you gone to the doctor weeks ago. Commander Wick said, “When you don’t get involved, you create a negative situation of lasting consequence: crime is allowed to perpetuate. If you don’t trust and act on your intuition, you’re allowing criminals to get away with their crime. This may impact you directly in the future and you could be the next victim. Criminals often repeat their crimes, with some becoming more and more brutal each time. Not reporting what you know can result in the criminal brutally maiming or killing the next victim.” Looking the other way can cause people who don’t report crimes to feel guilty for years to come. The average person who doesn’t report a crime will start asking themselves questions like, “What if I had reported what I saw? Would the criminal have been caught? Would the victim still be alive? Would I have made a difference? To help change a bad situation into a good one, report the crime. You’ll feel good about taking responsibility and will sleep better at night knowing that you did what you could. Your conscience will be clear. 5.Retaliation Another reason people don’t report crime is they fear retaliation. “In general, research shows that criminals rarely retaliate against people who report a crime…It’s a felony to intimidate witnesses into not testifying against them. There are three reasons why retaliation rarely occurs against the average person on the street who witnesses a crime. First, the average criminal generally doesn’t have the resources to solicit another individual to intimidate or kill witnesses to crimes he has committed. (However, it’s commonly done in the movies!) No criminal wants higher bail bond and the possibility of felony charges added to his charges. “Secondly, retaliation or intimidation rarely occurs because there are generally multiple witnesses and lots of evidence uncovered by the police that will convict the criminal. The criminal won’t spend his time searching for each and every witness to ‘take care of them.’ ‘Taking care of you’ by killing or hurting you doesn’t remove incriminating physical evidence or testimony by other witnesses. ‘Taking care of you’ won’t make a difference between the criminal being found guilty or innocent. For all these reasons, people just don't want to report any crime.

I think that always,wherever you are, law affairs are very delicate. Because you need a moral authority to point them out. And as Jesus states "Those who hasn´t sinned... throw the first stone" ... as I have so many sins, I can´t throw them the first stone. =) Blessings!... Dainy

You must be vigilant. We must look on each other. for our safety what if it happens to you! you will also look for justice.