Media representation of police (particularly in the US) is responsible for many people avoiding police officers when dating. Someone has to do the role, and you seem like someone who is proud and fulfilled. If they are okay with getting to know you but have a problem with your job, you’re not really responsible.
If you keep looking for someone and presenting yourself as an honest person, perhaps you’ll find someone on the app who’ll look past it. If not, try a different app or start looking for people in places you frequently visit.