It became a holiday because someone noticed Trump had a rally scheduled on it, even though at the time, no one outside of Texas even knew about Juneteenth.
Well that’s not true. I know about Juneteenth celebrations in Atlanta in the 90s. People should really stop whining about this. It’s a free day off, at least for a lot of us, mostly jobs that are mostly white people I’ve noticed. That Murica for you. “Let’s celebrate the end of slavery by giving all the white people a day off”.