Have fun glorying in your power fantasies and then doing nothing and grumbling about how you really would have.
P.S. On the very, very slim chance you really are mentally unstable enough to do so, don't kill anyone. It's not going to end well for you or the nation.
Stalin as an example of a Western Fascist is ludicrously off the mark. Look up Fascism vs. Communism, and read about Hitler's relationship with Stalin - "Though they never met or even spoke, Hitler and Stalin loathed each other on political grounds. Both men hoped to buy time to prepare for the future Nazi-Soviet war they knew was inevitable." Mussolini's revolution killing tens of millions? You need to retake history and politics my dude.
As for Hitler, the numbers you are talking about aren't his takeover of Germany - they're WW2. Unless your argument is that killing Fuentes/other social media personalities is going to stop WW3 (and I have no idea what group of nations you think are going to full-blown war with the US because of Fuentes/others) you need to stop using "tens of millions" for harm prevention by "silencing" these dudes. It is, indeed, hyperbole.
Cops: You are are saying, over and over, that killing people to stop suffering is right. You are absolutely talking about killing people who are SAYING things you don't like. Fuentes is not an active shooter - I can't even find a criminal record for him of any kind. I can read what you write. "You kill the Nazi leader to stop the minorities getting murdered" - you want people you have decided are dangerous to die now to prevent possible future harm. Exactly what I wrote.
Whatever, I'm not going to challenge your morality anymore - it's clear you think you have a right to declare when someone deserves to die. You've made it clear you don't care about laws. I wrote a post hours ago that ignores morality completely (and most of legality) about the likely actual consequences of the vigilante war you and others are proposing. It's near the top of this thread if you want to read it.