This is untrue and just plain troll bait.
To wit: I was robbed at knife point by some dude in his 20's, when I was in 6th grade. I was jumped in Chicago by 2 guys; I lived in a house on the south side of chicago for 8 mos - we got robbed 5 times - 4 of those five times we were upstairs asleep.
I'm a white, southern, born, straight male. I work in the construction industry and make art/murals as well. I also own a handgun. I have some economic conservative ideas and some libertarian ideas as well. I own my own house, and my own business. I'm a vegetarian.
I am still liberal.
These silly labels and judgments are counter-productive. This divide and conquer approach is working on us as a people... we really need to get past this ideological bickering of mindless and undefinable labels crap - and get down to business. We have real issues at hand today as voters and we need to press for real soultions - specifically to our legislators - presidents are junk puppets.
Personally I think this article is just junk science... and strives for nothing more than us wasting our time talking and arguing - so as to not pay attention to goals as a society. Expecting us to let"them" take care of it. It's our responsibility, people.