You need to get thicker skin. That's really all there is to it.
If you are putting your opinion out there on a public forum - be it in an IRL debate, in RS, on the forums, or even here - that opinion is there. People are allowed to discuss it, analyze it. You're doing it right now for another point of view that isn't your own, do you realize that? (Also, calling the opposition full of "lies and misinformation" is a hollow and incindiary statement - no one has lied to you here and I doubt they have elsewhere.)
If people casually correcting you in these public discussions is how you judge harassment, I have good news for you. You have an ignore list - here, on RS, and practically on any form of online communication. Use it.
I don't want you to leave. But maybe you need to take a break rather than carrying this chip on your shoulder into every discussion you wade into. Come back when you're a little more collected, you'll have a better time.