Unless they were arrested by the Facebook police, you're discussing Indian politics.

Maybe it's for the girls own safety?

"a mob of some 2,000 Shiv Sena workers attacked and ransacked her uncle’s orthopaedic clinic"

Police did not find that OK. Police just make people obey the law. And politicians write the laws. And back to politics again, so end of the story. Here you can just argue if such laws are OK or not, which will also end in a political debate anyway.