Broken app can't be deleted

App wouldn't work, deleted it, brought it back from the trash can to try again, still wouldn't work, and now it won't let me delete it again.

I think part of the reason the app is so broken is because after I couldn't delete it, I tried going into the package content and deleting each file one by one, but it wouldn't let me do that to all of them. So now I have an incomplete file. If I redownload the app it gives me a version that I can delete, but the old one still won't go away or open or do anything.

It's so annoying to just have this stupid broken thing stuck on my desktop. How do I get rid of it already?! I don't want it there forever.