Answer:

Does skateboarding on public property is against the law?

Skateboarding in public property is not against the law. As skateboarding does not require a license, you can legally ride your board on a sidewalk as long as it is not prohibited.

Fact: Public property is for the public population. Thus, no permission is needed for skating.

Opinion: Skateboarding is not prohibited in the law as long as you don't cross private property.

Evidence: The law does not say that skateboarding on public property is against the law.