Why Kidd/Hawkins/Apoo alliance are planning to take down Shanks? Just in latest episode of One piece (Episode 736). There was one scene which shows that Kidd/Hawkins/Apoo alliance are planning to take down Shanks.

So my question is, Why Shanks? I mean there has to be some sort of reason behind this. Why didn't they choose someone else. What's the main reason behind this?

Note: I follow Anime rather than Manga
Credits for the image goes to Saji D Ahsan