When would you release it? Friday night is about the best time you can release something. People are home, schools are closed, business and commercial areas are empty. It's also when media will be least avaible.Its the police chief that hyped up the release of the bodycam footage as 'worse than Rodney King' and releasing it on a Friday night? That's not incompetence, that's practically begging for riots to break out across the nation on Friday night, Saturday, and Sunday.
Also I think saying it's worse than Rodney King was just an attempt to show sensitivity because yeah, it's worse.