Total BS. Among many flaws in your comment, one is that it pretends there's no history of hate and racism against some more than others.
Yes, if someone says 'we should lynch Sarah Palin' as an over the top expression of saying she is a political criminal or similar, it lacks the level of offensiveness that saying we should lynch Jesse Jackson or another black leader does, not because fo some political correct conspiracy you are so whiny about, but because thousands of blacks, not whites, were lynched as part of a massive history of hate and discrimination.
It's a little like how the Germans do have special laws against anti-Semitism and pro-Nazi things, because their history did not start after WWII.
Those who are too ignorant to have any sensitivity, any empathy, and appreciation of history, to them it's a mystery why not to treat it all exactly the same.