Go to the Old Roller Mansion and find a person walking near the cliff. Go to that person and throw them off the cliff.

Go to the observatory where the binoculars and a hidden CD are located. Throw somebody there into or near the water to get an easy 207 respect, and unlock the achievement.

Play the "Crowd Control" mission until you get on the rooftop to protect your celebrity. Throw one of the attackers off the roof.