I don't know what long risk mitigation is, but I'm offended. /s

But seriously, nobody at the NSA is going to place* you on a watch list because you are part of a small vocal minority that raised support online for Snowden, a wanted traitor and saboteur of the USA.

*There is however a good chance that the money grubbing bastards at one of the third party contractors the NSA eats up reports and analytics from will profile you into something you are not (or lets face it, you are) and that will be ingested into our intelligence pipeline.