Yes, Morsi should be charged with murder and conspiracy, because his actions resulted in the murder and deaths of many people. Leaders should not be given a pass for their atrocities. Rather, they should be held even more accountable, because they have chosen to be in a position to exercise power over others. He should be held accountable.
Morsi has done some questionable things during his time and it is hard to say for sure what is fact and what is hear say. However, if what I have heard is true than he should be charged with murder and conspiracy, it would make the most sense in this situation.