If I wanted to troll Nazi's/White Supremacist how would I go about it? I have heard of trolling and kinda got an idea but how do I find the groups growing the hatred around the world online?

First, spoof your IP address.

Then, start with Facebook. Create a realistic looking account, preferably with bots for friends, and start sharing and commenting on hateful groups' posts. They'll come out of the woodwork and if you play your cards right you get invited to Discord servers and shit like that where the really heinous stuff happens.

Then, after taking months of screenshots and compiling all the data you can, you turn it over to Unicorn Riot or a similar group and watch the fireworks.

As someone who spent much of her teenage years arguing with various ghouls online, it's not worth it.

Don't, you'll only make them worse

If you intentionally stir the pot and piss them off they'll inevitably just go take it out on someone else and further reinforce their beliefs

You don't need to find them, they find you. Just say something true like "Israel is committing some of the most disgusting war crimes in the modern day" or "Putin is a warmongering asshole". Once you post something like that you get a bunch of idiots reply to you and try to convince you that you're wrong without actually explaining why you're wrong. They just throw strawman arguments and whataboutisms or just straight up lie.

Look around on social media? I mean, they're not exactly subtle, especially now that Elmo runs Xitter.

Nazis*/white supremacists*

Also don’t waste your time with them

Telegram is full of these groups. Usually, the trolling is simply one-upping their ass-backwards logic, like telling white supremacists to "not even breathe the same air that a non white has breathed! hold it, pass out, but refuse to take any of it in!" - if it's a video of someone stating that and saying there's scientific evidence, people will believe it even more and no, you won't even need to create fake links for said "evidence".