Now, caveat: Social media is not *required* for the Shouting Class to wreck a society. Exhibit A: France's century of turmoil.pic.twitter.com/tFWnsfWReD
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I used to be very active on reddit, so unless something has dramatically changed I don't buy that things that are bigoted get downvoted. 
I mainly hang out in science and politics subreddits and don't see much sexism or racism there, but could be I'm missing it elsewhere
Or that it's not directed at you? I'm pretty sure there some serious shit in those reddits, but I won't go digging as I really don't care.
There's tons of sexism in science (where I work) so why not in the science reddit? I mean there's no real place where there isn't.
Reddit, much like twitter, is not known for having very good policing of bigots. 
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.