The Southern Poverty folks still have their red flags in the drawer. On second thought, the only red flags they have are ones that Marx, Stalin, Lenin, and Mao would approve of.
The most hate filled people I’ve ever encountered are ALL from the Left. Usually the ones with the “coexist” bumper stickers. A few years ago when we countered the annual ANSWER march in Hollywood, a friend of mine walked around their vendor area. She saw a coexist bumper sticker next to another sticker that encouraged “Kill Dick Cheney”. Yeah, that’s peaceful and tolerant.
If you spelled CO-EXIST as TOLERANCE, Christianity’s “cross T” would be first and Islam’s “crescent C” would be near the end.
All in how you lay out the design.