You forget that "them" is a very small minority of the population.
In a short while, none of them will be left, those who had to use force to defend against them will never give up the tools they used to defend themselves, and American cities will be much safer places.
I doubt that "them" amount to 1 percent of the population, likely much less. Police and former police, veterans, and CCW holders amount to more than 10 percent of the population.
I’m thinking that the media can make a small number of people look like a hoarde in the perceptions of the public. If a few of them are shot by armed citizens, the media will make it look like a bloody massacre.