Mayor Pete outright lied about Black endorsements for his plan and blamed it on the Black people he lied on for not correcting him before the email went out. This would've been a major scandal for any other candidate (except maybe Biden). The lack of outrage is its own scandal. 
A bunch of you would've lost it if Bernie did this. We all would've lost it if Trump did this. But I guess calling out disrespect towards Black ppl isn't always politically expedient for some white liberals.
You can support someone and still want them to do better. Stop acting like support means letting everything slide.
