I agree, probably not proof of conscious bad intent, but proof of not looking nearly closely enough, thinking hard enough, showing it to folks for their reaction, etc. Yes, the star is definitely more sheriff star shaped than Star of David shaped. But if they'd shown the design to a bunch of folks to get feedback, they'd have easily learned that a whole bunch of people made a negative association with it that they didn't expect. In general, there's a bit of ignorance there. Most folks with even a junior high history class level historical awareness would know that they should be super duper cautious about the holocaust association with gold stars sewn onto shirts and make sure their design doesn't look like anything that any reasonable person would see as being anything like that. If you're going to do a six pointed gold sheriff star, you make wildly sure that the rest of the shirt just screams Wild West or police. If you were aiming for the sheriff association, why would you go with black and white horizontal stripe, the classic pattern for jail prisoner, not lawman?