The film remains the most polarizing entry in the franchise. While it was a massive box-office success, fans often debate its heavy use of and the shift toward extraterrestrial themes compared to the supernatural/religious relics of previous films.
A crystal skull belonging to "inter-dimensional beings" (aliens). Indiana Jones and the Kingdom of the Crystal Skull
1950s Americana, "Red Scare" paranoia, and Greaser culture. The film remains the most polarizing entry in the franchise