What Does The Harry Potter Series Promote?

So tell me: what exactly does Harry Potter promote, anyway? I've heard its far easier to be negative and to destroy, than to be positive and to create. Certainly this bit of insight should bear no surprise when running a Google search on the matter.

In the first two or three pages, the negative articles outnumber the positive ones. At first glance I only found one result with a good thing to say. Once looked further I found three with praise.

I haven't made the time to read the books. I am therefore not fully qualified to express my opinion. Regardless, I do believe this series is a good set of stories which promote reading, tolerance and understanding.