Someone stole my Youtube video and uploaded it on DailyMotion?

I'm a VERY SMALL youtube channel (6 Subs), and I uploaded a video a month ago. 15 days later, this account called Minecraft on DailyMotion stole my video (there are other people who had their video stolen, but I'm talking about my vids). I noticed it today because I was trying to get the title use its name format. Now I'm mad. If it was on youtube I would of reported them, but since this is another website, I don't know what to do. Please help me, what do I do.

If this helps, this is the link to the "Minecraft" channel that copies videos, including mine-

http://www.dailymotion.com/EliciaCuevas

If you have a good lawyer or a thorough knowledge of copyright law - you take them to court to obtain an injunction to have the video removed.
Otherwise, you have a cry and moan - then you grow up and get on with your life.