Besides the immediate threat of mass rioting and an armed resistance no matter who you’re flogging, public torture as entertainment is a very, very bad precedent to set, and only serves to build up a culture of antipathy. Imagine how the wider justice system would change once that’s normalized.

As others have said, seems like it would have a counterproductive effect.

Punishment or inflicting pain tends to engender sympathy for the one being hurt.

That said, sometimes political assassinations have been effective based on the criteria of the assassin. I’m reminded of the guy in Japan who shot Shinzo Abe.