This design comes from season 34 episode 16 called “Hostile Kirk Place”. As it’s a fairly new episode and I’m not all that caught up these days I can’t really describe the episode, I just noted this shirt down to make as a design. Given Kirk’s character, I can only assume that the school is teaching something he doesn’t agree with protests against it as some jab at right wingers or the anti vax crowd.

Here’s the link to the product as a pin, but you can view the design on multiple items if you’re interested.