The bullfighting footage is extremely graphic and violent and can be distressing to many viewers.
One scene shows a woman motioning to the upper floor of her home after knocking something out of a window. Another character had a heart attack, and they presumably die shortly thereafter. (They're later revealed to have lived.)
Several flashback sequences show distressing and bloody cuts of past scenes and other imagery, which can be at least moderately distressing for viewers.
There are numerous mentions of Satanism and black magic, with one character being an occultist.
The glassy eyes of a character addicted to drugs may be mildly distressing for viewers.