Can't a man cry?

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Today morning i saw an article in our local news paper. It talks about a recent study in which the result was like this: If a women cries a man may easily get irritated but if a man cries a women does not get despise or repelled. Even the article states an example for that, which goes like this: "When David Beckham broke down uncontrollably before millions of fans on television at England's defeat in the World Cup his female fan following grew by leaps. Many of them impulsively longed to run their fingers through his hair to comfort him. This bare display of emotions endeared and won him many hearts." But to many if a man cries it is unmanly and a sign of weakness. What do you personally feel? Is it wrong for a man cry? Can't he express his feelings?