Discription of Events: Two males driving without seat belts with two younger children in the back with no seat belts. This vehicle was on a Left Turn Only lane and I was on a Right Turn Only lane. He jerked his vehicle trying to get into my lane last second while we both were the first ones in our lanes waiting for the green light. Almost hitting my vehicle, but I was able to accelerate fast enough. He then started tailgating my vehicle. After getting away from his vehicle approximately 10 blocks or so, the vehicle started following mine. Trying to hit me, laughing, they may have been day drinking. Then started rolling down their windows driving to my right side cursing at me, using profanity in front of the children, threatened my life, claimed they would fight me and beat me and my family up in my vehicle. My wife, mother and younger brother was in the vehicle during the time. Then they proceeded to drive fast running a red light and then finally leaving us alone. People like this should go to Jail. Endangering the welfare of children. Intentionally trying to cause an accident. Tailgating. Verbally attacking and giving life threats. Not wearing seat belts. Possibly drinking and driving. Running a red light. Please do something about these drivers out there. For the safety of other people and their children. Keep our roads safe.