It's ironic that this publication is ostensibly anti-censorship. One of the few things I know about this subreddit is how quick they were to delete posts and ban commenters that didn't fit in with their worldview.
It's an echo chamber of self-victimization that probably sees the Youtube case earlier this week on first amendment application as both a win for private companies and a loss of what they consider their right to free speech.
Hes running to get big/dark/foreign money out of politics ad is funded 100% by citizen/supporter donations not special interests.
He could push for a public funding system to eliminate both types but would need either careful legislation, a supreme court reversal, or a constitutional amendment (and probably both the first 2 to work long term anyway).
On top of that, the conservative subreddit literally has rules about it not being a place of debate or questions. Compare it to the Bernie sub rules and see if you can spot how once again both sides are not the same.
It seems like you were rightly banned for being deliberately obtuse. Pretending that there's no difference between grassroots small money donations and the kind of money that Sanders wants to eliminate from politics is straight up trolling. Even if you believe that both categories need to be eliminated, you didn't start with anything resembling a lead-in to a reasonable discussion on the matter.