I recall a clear period of time when at least some of the people running Reddit seemed very proud of how they didn't take down or ban subreddits that many people thought were inappropriate, offensive, or harmful. Unfortunately, since Aaron Swartz was the only sometime-Reddit leader I knew, I can't immediately point to other people from Reddit leadership who were explicit about this (as Aaron certainly was).

I believe there was a rough Reddit equivalent to Twitter executives' famous "the free speech wing of the free speech party" statement, but I can't cite one and I may be letting my memories of Aaron's views get projected onto his colleagues.