The above pictures are of inverted (upside down) stars, or pentagrams rather. This symbol was adopted by the Church of Satan, though it dates back quite some time in its’ use by occultists. It is extremely common among Satanists and other variations of practicing occultists. It has great significance to many of them, but we won't go into the details here. As you can see above, the street layout by the White House in Washington DC was designed as an inverted Pentagram.
Another picture I want to point out to you is of the pope.