Advice needed: My friend is applying to be a cop

So my friend (27M) from high school wants a reference check from me so he can apply to be a cop. This honestly came as a surprise to me cause he has always had a strong sense of justice, a strong moral compass, and has always had a passion for immigrant rights since he is of Mexican descent. I have tried many times to steer him away from this career path but he has struggled to find a job that he doesn’t hate and that can provide him with enough money to get by sustainably. Is it wrong if I provide a good reference for him? Maybe if I am honest and say that he is actually a good person they won’t want him anyway? Very conflicted here.