rip (someone or something) to shreds
1. To criticize, upbraid, or condemn someone or something severely or thoroughly. A: "Have you heard anything about this movie we're about to see?" B: "Well, one reviewer ripped it to shreds, but I still think it's going to be great." I hear John's bosses ripped him to shreds at his annual performance review.
2. To cause great damage, disorder, or ruin to someone or something. Enjoy the tranquility and order of your house now because soon, your kids will start ripping the place to shreds. Sarah's very first opponent in amateur boxing ripped her to shreds, but that's how it goes for most novice fighters.