No, she didn't. There was ONE video that was specifically edited to make her look bad. If you watch the full performance, it's not great, but it's absolutely not worth the backlash it got. It was HUGELY overblown.
I'm specifically talking about her infamouse Olympic performance here. I have no idea about the nepotism/racism stuff. All I'm saying is the performance itself wasn't bad enough to warrant the ridiculous response it got.
The first time was like shitting the bed. It was an unpleasant mess for everyone involved, but potentially forgivable, assuming the mess was cleaned up.
The second time is smearing shit on the walls.