Not just the enemy of the US, you'd actually have to do some other horrible act. US has enemies all over the world and the capability to murder them but they're still alive, explain that.
In the US you can easily oppose Trump or any other president, not to mention other politicians - you don't have to fear that you'd be killed within months for that. Tell me how many enemies of Putin have mysteriously and conveniently been murdered, not just in Russia but around the world.
Every credible opposition politician, whistle-blower and journalist in Russia gets murdered, you'd have to be mentally challenged to not see the pattern. Last I checked, Snowden and Assange were still alive.
Snowden is alive because he's in Russia. Assange is alive because he hasn't left his London embassy in years. Anyway, it's clear there's no convincing you. You've never lived in Russia and only listen to propaganda in the news.