Your source provides zero evidence that the Park Police said anything at all. It's not even claiming they did. If it was the park police who said this, wouldn't

Your source provides zero evidence that the Park Police said anything at all. It's not even claiming they did. If it was the park police who said this, wouldn't he have mentioned that? > A source says tear gas was never used "A source says", not "Park Police say" or "A source within the Park Police says"