All these people posting about how safe it is around there are deluding themselves. I took a bus one night and a group of about five came on who were being pursued by another group of about ten. The second group were like a pack of animals outside. They managed to get the middle door open and made a series of runs onto the bus to attack the first lot. One or two of the first group also made occasional ill-advised attempts to get outside. This went on for at least ten minutes, which seemed much longer at the time. I have no idea why the driver didn"t drive off, as some people were shouting for him to do, but he didn"t, perhaps because there had been some damage to the bus, so the attacks just continued until the police arrived.
You may have been okay on your particular journey, and you will be most times, but it is an extremely dangerous area.