That is a tough one I would have to say the normal things cops do now

Yes, but this is intended to be humorous tongue-in-cheek stuff...

I would have aliens selling strange alien drugs

But who would they sell the Strange Alien Drugs to...?

different aliens

Now I am imagining aliens disguised as humans, so they can sell drugs to other aliens disguised as humans...

They could investigate those tentacle monsters from space that always seem to be finding anime or furry girls to molest.

Actually, I am considering a Menacing Alien Empire, all the members of which have tentacles... And boobies...

Space pirates hijacking asteroid miners' ore freighters full of platinum iridium ore. The space pirates would be extremely dangerous if they highjacked a mining supply ship full of hydrogen bombs. (There is a thousand foot deep unguarded H-bomb crater near my home; the shot was a successful experiment in mega excavation via nuclear explosives.) Space pirates with a load of stolen nuclear explosives could make quite a lot of spectacular trouble.

Did you know that there are hundreds of pirate attacks on freighters right here on earth every year?

o.O

Speed kills, ya know...

*Heh*