Anyone can search it. Here are two examples. The second article is more comprehensive, but the Slate article shows that even the left partially acknowledges the truth.
http://www.slate.com/articles/news_and_politics/crime/2016/02/why_many_black_politicians_backed_the_1994_crime_bill_championed_by_the.html
http://prisontime.org/2013/08/12/timeline-black-support-for-the-war-on-drugs/
Blacks will vote however there LEASH-KEEPERS tell them to.