Why is it racist to tellt he truth: Blacks destroyed Detroit.?

Detroit was ruined after the 67 race riots. Some say the jobs ran out because of Japenese car competiton. But more people work in the city now than ever before--they just have to commute because Detroit is the home of many dangerous blacks. Why do liberals want us to ignore this. Do they want other cities to make the same mistakes we did? Do they want other young boys mugged like I was? Do they want more girls d?