1) Learn the city inside and out.
If you don't know it inside and out already, then this is a must. Drive around, learn the city inside and out. At night there is no traffic, so you can drive a lot faster to make things less time consuming and also more fun. Learn where all the police stations are, learn which roads they use to get to/from the stations. You will learn which roads they use just by driving by the stations from various directions. Learn where the common spots for speed radar setups are. This is good information both for when you go on fast joy rides, and when you need to leave after doing any of the next things.
2) Commit a hate crime
Nighttime is best time for hate crime. Any group worth hating is like a cancer, it has a center, and it slowly spreads out. Choose your day/time correctly depending on who the target is, then go right to their center to show them that they are not welcome.
e.g. a) Faggots like to hang out around specific spots. Go there late at night, but not on a Friday or other day when pigs are expecting a lot of people out; the cops will be there to protect fags. The rest is pretty straight forward, but remember that actions speak louder than words.
e.g. b) Niggers stick together like mix of tar/shit that they are. Go to their neighborhood and find a basketball court where they like to play. Lock the basketball hoops with steering wheel locks, then write your message of choice under each hoop.
3) Huff raid
4) Kill homeless people
Time to expand your group? Have the new guys prove themselves by having them stomp a hobo or two to death. That way you have dirt on them if they snitch down the road.
5) Fuck with the property of those you personally know and hate
6) Molotov everything