We need to be careful about assessments regarding strange objects in the sky.  I looked at the one video that was posted and it was fairly clear that the one object was likely a drone of some sort.  When the view switched out of "normal" mode, the movement of the propellers was very obvious.  

Not saying all of these objects are drones, but with more and more drones in use, it is likely that at least some of these objects are, indeed, drones.  Not all of them are, but some are.

And, for those that are drones, the questions are:  what are they doing?  Whose drone is it?  What is it looking at?