A Cinco de Mayo protest is being planned outside a Morgan Hill high school.
Live Oak High School four years ago was at the center of a Cinco de Mayo controversy after students wore t-shirts emblazoned with the American flag.
"We feel it's appropriate to have patriotism 365 days a year," said Georgine Scott-Codiga, who is organizing Monday's protest.
Scott-Codiga, president of the Gilroy Morgan Hill Patriots, said her group will assemble outside the school at 7:30 a.m. The school district in response has put up a fence around the campus to block protesters from entering the school.
District officials also said they plan to increase campus security on Monday.
Those who plan to protest said they feel their First Amendment right was silenced by a three-panel judge. The panel ruled the school district acted properly in 2010 when it told four students to turn their American flag shirts inside out or go home.
Student protests followed the incident and drew national attention.
Some fear Monday's protest may get out of hand.
Juan Lopez, who heads the We the People group, said he is concerned the protest will spark violence because groups from outside Morgan Hill are also planning to attend Monday's rally.