This is from the FBI Uniform Crime Statistics. You can see that there is a fairly low rate of violence in the '50s and the '60s, then it soared upward for several decades, and began a precipitous decline, starting in the 1990s, so that it went back to the level that was last enjoyed in 1960.
Ovo je prema unificiranim statistikama kriminala FBI-a: kao što vidite razina nasilja prilično je niska 50-ih i 60-ih, zatim je porasla kroz nekoliko desetljeća i počela strmo padati, počevši od '90-ih te se vratila gotovo na razinu iz 1960.