They're the bad guys here, and some of them have set targets on us ninja for whatever reason. Even if you don't have anything to do with it they'll still come after you if they know you are one.

Hey, by the way. What do you remember doing before you showed up here?

[Because one of the last things Naruto remembers was meeting all the tailed beasts and their jinjuurikis but.. they were sorta Edo Tensei'd]