A BMX bike can be very exciting to ride. In particularly, if you know what are doing like seen in the Billy Perry video.
The video shows how an American tourist sees Copenhagen from his action camera while riding in Copenhagen. For most people it looks like “don’t do it at home” tricks, but also quite entertaining.
If you prefer to ride your BMX during safer conditions, please see the article on where to find a BMX track in Copenhagen or other places in Denmark.