Hello,
Your website is currently hacked and used to distribute malware -> that's why we started to block your domain. You will have to remove malicious scripts which was added into your website - php/exe/java/etc (It would be nice, if you can collect them and send them in password protected archive to virus@avast.com).
All the files (hack) should be located inside this folder (and are still there - checked 5 minutes ago):
hxxp://www.raceonusa.com/Home/exemple.com/
Regards
PS: We will not remove your domain from blocklist until you fix the problem.
PPS: You should start your own thread.