[baltimorepoet]

The purpose of police is to raise revenue.

Once one understands this, so many things make sense.
1) Trucker fines
2) Traffic cameras
3) Civil asset forfeiture

Actually the modern purpose of governments is to raise revenue (rent-seeking). Police are just another branch of the government.

[Navy Patriot]

...the modern purpose of governments is to raise revenue (rent-seeking). Police are just another branch of the government.

That is a more accurate statement than mine.