Unless you stick to CNN, MSNBC etc for your news, there are multiple daily reports from all over the country of thugs attacking people in groups, pulling people out of cars etc. It's all over Youtube, it's a new sport.
Judging things by the "good ole" days is not valid. You don't have to be a beagle to smell things have changed in this country, it's not 1990. Attempting to use the past and applying it to a scenario that is no longer true is myopic. Things are going downhill right now, I hope it changes.
Thankfully things have changed since 1990; the murder rate is much lower than 1990 and is approaching historic lows. A while back there was a news special that examined how people could perceive historic high crime when it was in fact near historic lows. Their conclusion was that the problem was exactly what you used as the basis for your belief; "multiple daily reports from all over the country". They found that even though crime was down, the growth of the 24 hour news cycle had resulted in an 800% increase in the reporting of violent crime over the last few decades.