I don't think nets are going to stop anyone and even if it did, there are other ways to do it. 15-16 years ago I was considering the options. Unfortunately I don't know how we fix this problem. Rachel had a lot of support, but between her physical pain an a couple of internet trolls it wasn't enough. The solution needs to be more than teaching tolerance to 90% of the world's population. The only way you're going to prevent this is to teach tolerance to everyone. Unfortunately Baltimore, Ferguson, and others are proof that its a very difficult thing to teach. Our society knows that racism is wrong, but there is still a lot of it out there.