Is it legal to download something like this?

Legal or illegal doesn't really matter. If the regime wants to come for you they will.

Of course it's allowed. The gov will happily steal and buy all of your info. No problem to have it done to them.

Legality matters now least of all to either side.

I dont know. I think downloading it with Tor would make it almost impossible to find out you downloaded this stuff anyway.

You can't prove you didn't (and the fuzz will produce evidence you did).