I think i inspired my friend to commit a murder suicide.

Im kind of at a loss for words. Im just shocked and I feel so fucking guilty. Ive known my friend Quinn since school started in august. We had a class together. We had sleepovers and shit, he would always try to act funny but would go over the top most of the time. I didnt care man, he was one of my only friends. At the sleepovers, at night, he would drop the funny act and start to share what reslly goes on in his mind. Talk about all the traumatizing shit thats happened to him in his life, admit that he hates himself. He also admitted that hes a person that doesnt hsve a voice in his brain which I think limited his ability to think too deeply about shit. He came over to my house on Friday to hang out, we end up going on a walk and we see these dudes thst live on my street that act all ghetto. Like wannabe gang bangers pretty much. They drive past us in their car and one of them rolls down their window and shouts something I couldnt understand at us, and Quinn shouts the n word at them while theyre speeding off. I told him that shit is gonna get him jumped and he didnt seem to care. Kind of shows how little he valued his life I guess. Me and Quinn are walking back to my house and make it to my street, and the same guys in the car drive past us and pull into their driveway. Me and Quinn are about to walk past their house when 4 dudes get out of the car and the biggest one is walking up to us and starts cussing out Quinn, quinn is apologizing saying the word slipped out. While this is happening im just standing there shaking my head and telling quinn to just keep walking. The dude pressing quinn pushes him around a little Andindont knoe what to do, I judt kind of froze up. He let's us go and me and quinn walk back to my house and talk about what just happened, and I apologize to him for not standing up for him. To be fair he did shout the n word but those dudes in the car are constantly starting shit with me and all of my neighbors, thats just how they are. Quinn is taking it pretty hard though, saying hes gotta move away so he doesnt get jumped and killed. Im telling him that theres no way theyrr gonna do thst shit, everything they do is for SHOW, but hes convinced some bad shit is gonna happen to him. Its getting late in the day so quinn calls his ride to pick him up and goes home. Im relaxing and get a call from him and he seems a little off, hes asking questions like "if you could pick one of my consoles to have which one would you want?" And the most alarming question was "if somrthing happened to me would you find other friends?" And I say yes, because Im not gonna be friendless for the rest of my life becsuse somrthing happened to one of my friends. Maybe that wasnt the right answer. He said "good to know" and I told him I wss gonna be right back, by the time I got back he had hung up. That whole interaction gave off the impression that he wss gonna do something to himself. Here's the part where Im convinced i inspired what happened. I text him "dont kill yourself. If you do you have to take a gangster with you." As a joke. He says "I wont". On monday he shot a man and then himself in a gas station. It was a black man. They had gotten in a confrontation, Im not sure what it was about, but quinn pulled a gun and shot him in the head and then turned it on himself. I had to find out from a facebook post. Ive been fucking distraught ever since I found out. 2 lives gone just like that. Im sick. I joked to him about it and he did it. Its my fault theyre fucking dead.