I doubt it's really possible to "de-radicalize" him. He'll just keep on posting this violent Neo-Nazi shit unless we can convince the mods to do something. My fear is that his shit normalizes violent political discourse here on ImgFlip, toward Democrats specifically.
I posted a meme a couple weeks ago here about a prior meme of his that got a lot of upvotes so I reckon there are people here who agree with me
imgflip.com/i/3iuzbw
There's a good debate to be had about free speech vs. hate speech. I don't believe that upholding "free speech," or even tolerating hate speech, requires us to tolerate death threats. On the contrary: such threats impede productive and respectful political discourse. They shut down debate. At worst, such speech encourage people to actually commit violence against others or kill themselves.
But I won't re-hash everything here. Go to my other stream here for more thoughts and links to his disgusting garbage.
imgflip.com/i/3jwwft
If you support this, then please join me there, make your voice heard and let the global mods know. I don't know who they have, but even if they don't ban him they need to get the message to stop featuring his memes in the 'politics' stream.