Yes, currently the 2nd amendment only guarentees that no censorship comes from government. We need a stronger guarantee: no censorship on any public discourse from any party. Not any kind, because even well intentioned censorship causes problems! Using reddit as an example: suppose there is a subreddit A that discuss news and politics, and the mods ban racist comments. If you are a racist, will you change your racist way if you found your post banned? No, of course not. You would just be indignant and find/make another subreddit B that is more tolerant of racism. The subreddit B is provided the same tools subreddit A uses for censoring racist posts, and abuse these tools to censor any voices that argue against racism. You can no longer be convinced to abandon racism because you are stuck in your comfort zone and anyone who argue against racism are just SJW or special snowflakes in your eyes and their opinions are automatically dismissed by your brain.