I was at the circus and....?

Okay so, about an hour ago me and my friends were at the circus and it was like 10pm and there wasn't a lot of people there. So anyway these crack head guys started chasing my friends around the circus trying to shank us er somethin and they just ran away when the workers tried to help us, and now I'm home and I'm really scared. I can't stop thinking about it and I'm like shaking!! I don't no what to do. I can't tal to my parents about it because they'll just say it's my problem or it would be better if I was dead or something like that. So idk what to do.... I'm SOO scared! :/ any advice?