I often hear that Christians are "intolerant" and "impose" their beliefs upon others. 

And it's understandable, really. There have been many tragic incidents, both today (see Terry Jones) and in the past (see the Crusades) where intolerant and imposing people identified themselves with Jesus. Why this applies only to Christians and not to all of society, however, baffles me. Joseph Stalin's administration was pretty intolerant too (atheist regime). So is Osama Bin Laden, at least from what I hear (Muslim). So are Canadians (...pretty much everything you can think of).