my brother bought fireworks even though i hate them

Since it’s 250 my brother 19M has been really excited for Fourth of July this weekend. He wanted us to go see the towns parade and fireworks show, but I 14F am very sensitive to different sounds. I told my family I wouldn’t want to see the fireworks cause of the noise but that we could watch it on TV. They said we could do that or my dad and brother would just go themselves, which sounded good to me. I didn’t end up going to the parade because of the heat. When my dad and brother got home, my brother was holding a huge pack of fireworks. I really wanted to just say something and yell at them but I knew I couldn’t just do that. My family is acting like it’s no big deal and ignoring the fact I said I hate fireworks. I haven’t said anything because I know if I did, they’d set them off anyway.