While there certainly is in any society "a certain segment...which doesn't care about consequences", why, then, is America's homicide rate (and violent crime rate, and frequency of mass shootings) FAR higher than that of any other first-world nation? If it's no different here as anywhere else as you say, then the rates SHOULD be statistically similar...
...but they're anything but similar.
And when it comes to Muslims, try adding up all the Muslims who have committed terrorist acts in America - go ahead, add them all up - and then compare that total to the 3.3 million Muslims that are in America today. In other words, because of the acts of what is an almost microscopic minority of Muslims, the Right wants to blame and cast suspicions on the far greater whole who are good, law-abiding citizens and legal residents.
On a side note, on this same subject,
the American Medical Association pointed out that 10% of ALL American physicians are Muslims. Compare that to the fact that the 3.3M Muslims in America comprise slightly over 1% of Americans...
and that tells us that Muslims are almost ten times more likely to become doctors than the "normal" non-Muslim American.
Ah, but Trump and the increasingly-Islamophobic Right would never believe such stuff, 'cause obviously, the American Medical Association must have become a shill for ISIS....