What does Reagan, Tupac, and Anime have in common?

Holograms have been around for centuries, but recently they have been popping up everywhere.  They've even been getting so realistic... its scary.

Tupac's hologram rapped at coachella and Japan, of course, has had a hologram anime character name Hatsune performing concerts for years.  However, our late president, Ronald Reagan's hologram was scheduled to make an appearance at the Republican National Convention tonight, but the figure scared his creators too much that the figure has been pulled.  

Eeekkk! Does anyone else believe in ghosts?