A driver Named c a r l picked us up from brownsburg Indianapolis. Driving to Pittsburgh. Prior to c a r l taking over the bus there was two young ladies sitting directly in front of me. Later at one of our stops, two separate passengers warned the two young ladies of two men towards the back taking photos of them. Not sure if they had another connected bus or just left from feeling uncomfortable. I'm not entirely sure. But this took place somewhere in Oklahoma. When we reached brownsburg it was c a r l a little black guy. Who from the very beginning started to let passengers know of how things were to be handled on his bus ride. After quite some time getting boarded, on leaving the bus terminal carl started his monologue of dos and dont's on the bus, no drinking, no smoking, wear headphones if using your devices, etc, if any of these rules were broken he would pull over on any stretch of road call local police and have you forcefully removed, and "would continue as if nothing happened" now mind you I and those other two men who were on the bus from the prior layover (the ones taking photos)are now on carls bus some new passengers, some existing passengers from the prior driver. Somewhere between there and Pittsburgh carl alerted passengers he was making an additional quick stop somewhere, I'm not entirely sure, to grab some water which he had forgotten at one of our previous breaks. (An additional stop) Mins b4 we get to this stop one of the men moves seats to sit next to a woman seated across the aisle and one row behind me. When he did this the woman immediately complained of him rubbing himself on her. I than too immediately jumped in telling him to leave the woman alone, threatening to alert the driver, (who in his own words would abandon any passengers on the side of the road for merely not using headphones) mins after this. Literal mins after this took place c a r l stopped at his additional stop to run in and grab water. When I got up and told him of the incident that had just taken place. He went in got his items came back out. And was questioning me about the incident. I had told him everything alerted him of the men, who had done the sexual assault, and the woman who had been assaulted, he was questioning me on what they had said, ( they were speaking spanish) (I barely speak any Spanish) and when I had also told him of the prior instance on the previous drivers bus. He seemed more focused on why no one alerted him of what happened with the what the men had previously done, and not with what had just taken place on his drive. And was not allowing me to say the entirety of the assault that had just taken place, (mind you this conversation happened off the bus outside the door to the bus) he jumps back on confronts the wrong two gentlemen and I follow just shortly after pointing out the assaulters, and the woman assaulted, also note the woman did not want me to make a scene of the matter, so she was of little help in the initial telling of her story, none the less he decides after mins of back and forth with me and the two men, he pulls only one of the men to the front of the bus(I guess to keep an eye on him) and left the other man sitting directly behind the woman who was assaulted, now before the driver took back off, the man who was sitting next to me,who I won't name as of right now, who's information I have along with telephone number and three additional passengers who witnessed the assault, said to me, " thanks for trying to deescalate the situation" to which I replied, " this driver said at the very beginning he would kick us off for some very minor incidents, but he won't kick these guys off" the driver over heard this and than threatened to have me removed from the bus for not quote "liking the way he handles things" and than going on to say "if I don't drop this right now he is going to kick me off the bus right here right now" which to me seems retaliatory for me bringing up the "inconvenience" of this woman being sexually assaulted. I hope there is something done immediately with this driver and I will be following up. Very soon with inquiries into how the matter was handled. I have fellow passenger information, and testimony. Seat number she was in. I have the drivers name. And I hope something is done immediately. Do not hesitate to do the right thing or else this will continue. And it could become a serious liability for greyhound in future incidents aswel.