IMO the first bit is only tangentially relevant, and the second two are quite reasonable. Releasing the officer's identity, given the public's current state of rioting and lawlessness, would probably doom him and his whole family to death.
The tear gas and riot gear is 100% justified. When "protesters" are breaking into random stores, stealing shit, and BURNING THEM DOWN in the name of "justice", it's time for harsher measures.
The last is pretty effed though.