In early March 2025, a San Carlos, California, resident’s decision to display a Hamas flag outside their home sparked significant controversy within the community. The flag, positioned above two others, was first noticed by neighbors on March 9, leading to widespread concern and debate.
Many community members perceived the flag as an endorsement of a U.S.-designated terrorist organization, prompting reports to both federal and local law enforcement agencies. Legal experts clarified that, under the First Amendment, such displays are considered symbolic speech and are not illegal unless they pose an actual threat of harm. San Mateo County sheriff’s officials have shared information about the incident with the Northern California Regional Intelligence Center, though the FBI has not commented on any investigations.
The incident has elicited varied reactions from residents. Some express fears of potential radicalization, while others voice their dissent through protests and public statements. San Carlos Mayor Sara McDowell confirmed that the flag has since been removed, but noted that the situation remains under review.
This event follows a series of controversial billboards along Highway 101 in San Carlos discussing Middle Eastern conflicts, further highlighting the community’s sensitivity to such issues.


