Extra police were on patrol, Friday, at the California school that punished students for wearing American flag T-shirts on Cinco de Mayo.
There have been protests and threats of violence since the five teens at Live Oak High School in Morgan Hill, Calif., were sent home on the Spanish holiday.
The students said they wanted to display their patriotism, but Vice Principal Miguel Rodriguez said the American flag shirts were a safety risk because they might upset Mexican students celebrating the holiday.
Many called it hypocritical, since other students were allowed to wear red, white and green -- the colors of Mexico's flag.
"I have no problem with them wearing their Mexican stuff," student Dominic Maciel said. "I have no problem with them wearing their Mexico flag, anything like that. I just thought I'd show my pride, American pride."
"[The principal] said if you wear [the shirts] on any other day it's fine, but just because it's today, you can't wear it," Daniel Galli said. "[He said] it was supposed to be a Mexican day and we were supposed to honor them."
"It's just kind of disrespectful that they would do that on this day," student Victoria Wright said. "I mean, we don't go around on Fourth of July wearing red, white and green saying 'viva Mexico' because that's disrespectful."
The school district said Rodriguez was wrong to send the students home.
There's no word yet on whether he will be punished. Some parents want him fired.