I knew both of these people in high school, but we were not friends. I did have classes with both of them, but rarely interacted with them. I ultimately went with the first one because I thought it would create more of an effect due to its more provocative nature. I also made sure to ask for permission, but at the same time I did not want to reveal the project to him completely, so I just asked if I could use his picture. He responded, "Go ahead, it's public." I also happened to have a club interview over the weekend, and thus became slightly reluctant to change my picture, but I decided that if anything went weird, I could just explain that my profile picture was for a class.