Is this a bigoted observation ???

Over the past 50 years I've watched riots take place all over the earth.   What I've been most intrigued about were the riots that took place in the United States.
The ones that I got to see on TV and read about in the newspapers were:
1964 Harlem, N.Y.
1965 Watts, L.A.
1967 Buffalo, N.Y.
1967 Newark, N.J.
1968 Chicago, ILL.
1973 Jamaica, N.Y.
1992 L.A., Cal.
2001 Seattle, Wa.
and now in 2014 Ferguson, Mo.
When looking at these riots collectively, I notice an obvious pattern.   All of these riots involved only one group of rioters, with only one mindset, and only one goal.
The group were Blacks.
The mindset was "blacks are victims".
The goal was to destroy their community.
Who, in their right mind goes about their daily life looking for any (regardless how small or ridiculous) excuse to verify that they're being victimized ?
Who, in their right mind decides the way to correct this is to burn down their homes and businesses ?
What am I missing ?   I don't understand this.
Another incredible part to this is the representation of the actual victim(s) as "pillars of the community" when for the most part, they were thugs and criminals.
How can one particular group of people decide that they've been victimized and must therefore destroy what's around them ?   Does this make sense to you ?   If it does, please explain it to me.