I like a guy, but its complicated?

Well this is kinda long story, but I promise I will make it as brief as possible, so pretty much all throughout high school I was the girl who was shy, quiet, only stuck with my own circle of friends. I think you get the type. I was tired of just being plain old Anna, so I decided to just not be so scared of everything anymore. I pretty much changed my entire view on life and I honestly don't care what people think anymore. Anyways one day I was walking from school and I saw this guy walking in the same direction as me and I decided I might as well talk to the guy cause it seemed like a long walk. So we started talking and might I add he was really cute and just a year older. So it was all cool until I realized that we're from different races and that our races really apparently hate each other and are prejudiced, but since I was born and raised in the US I obviously didn't care. Then I realized that are religion is also from two different roots that have a lot of conflict, but its the same religion. I consider it quite stupid. Anyways we continue walking for 45 minutes and I gathered all my courage and asked for his number, which he gave me. For this past five days we have been talking pretty much nonstop and I'm really starting to fall for this guy, but lately he just isn't messaging me and is ignoring my texts. So I thought maybe I'm being clingy, so I have stopped texting him just waiting for to just respond I guess and I know that he has seen the messages because we both have iPhones. I really don't know what to do because everyday I'm getting even more stressed and staring at my phone just waiting. How do I get my mind off of him and what do you think I should do? I'm so sorry it turned out so long!

Stop texting and start talking. I don't get why teenagers nowadays have to use their phones to communicate all the time. If he doesn't like you, move on

You should ask him straight up "why are you ignoring my texts, did I do something?" and see what he says. If he doesn't respond then just forget about him. Also if you want to keep him off your mind just focus on something else. When I go through a break up or a fight with a guy I usually just have fun with my friends and not mention him to them. It makes me feel happy even though I was sad before.

You sound like you fell for him kind of fast… Just 5 days…

First of all, make sure you're certain that this guy is worth it. Race and religion are pretty big deals, and just because you're accepting, doesn't mean he is too. If he's not, he's not worth it and you deserve someone who respects your race and your religion.
Talking nonstop for five days straight does seem like a lot, so give him some space. Guys wear out the "honeymoon period" faster than girls, but after the hump, guys can be pretty committed in long term relationships when they want to be. If he doesn't want to get over the hump (move past the honeymoon period), it just means that he's a guy and he wasn't looking for anything serious but he may have felt that your interest in him suggested that you wanted a straight up commitment, even if you didn't.
Text him in a few days, and then maybe a week after that if he still doesn't respond. If he *still* doesn't respond, he's probably not interested and these things rarely work with strangers among young people anyways so don't think you're alone! At least he was just a stranger, so there won't be any awkwardness and chances are, you'll probably never see him again.
In the mean time, all I can say is distract yourself. What I do when I'm in a state of desperation over a guy is hang out with friends and hopefully they'll help get your mind off things, throw myself into homework, or join a club that meets regularly (my dance group has frequent practices so that's my go-to distraction).
Remember that you deserve someone who's gonna put their all for you and is worthy of you putting your all for them.

You're both in high school which means you live at home and are under age. It means you are subject to the rules of your parents and the culture they come from. Very likely his parents do not want him talking to you. You have to accept that and not be pushy and it does matter what other people think and if they think it's a no-go that's what he lives by. You need to let it go and if he contacts you fine. If not stop trying to reach him. Not every couple that meets is meant to go the distance.