As a Federal Employee I always felt we needed something between President’s Day (late Feb) and Memorial Day (late May). I think Patriot’s Day (April) is a good fit and celebrates the first battles of the Revolutionary War.
The comic from Cleveland’s take on rock stars, rap music, Arizona’s refusal to celebrate Martin Luther King Jr.’s birthday (“you got to be prejudiced as hell not to take a day off from work”) and the dumb things he encounters on the road all helped him win the 1991 Johnny Walker National Comedy Search.
I vaguely remember that standup special, and him saying if the government made KKK day a national holiday he’d be in his backyard smoking weed and taking the day off work.