I just thought Sirius' death looked a bit silly to be honest.
The idea of him falling through a literal curtain and just disappearing and the curtain being death just really got under my skin. Instead we get what looks like bad CGI precum.

Although there are reasons for it in story, I just got sick of Potter throwing tantrums, screaming at Dumbledore and having an awful haircut. (Although the haircut alone probably justifies all the anger)

Nationwide
We kill your kids and make it look like an accident.

I was laughing all the way through.. I forgot they were looking for the remains of a kid and just assumed it was being played for laughs.