Kamala Harris visited Puerto Rico for the first time as vice president Friday in an apparent effort to drum up support among Hispanic voters — even though Puerto Rican residents cannot vote in U.S. presidential elections.

While making her way around the territory's capital of San Juan, Harris seized upon an opportunity to embarrass herself.

Video shows Harris, 59, standing in a courtyard near La Goyco Workshop Community and Cultural Center, clapping along and smiling as a group of locals drum and sing in Spanish. Unbeknownst to the Democrat, these locals were protesting her visit.

Harris grins and claps through several lines of the protest song, but then Mariana Reyes Angleró, executive director at La Goyco, appears to lean in and tell the vice president the meaning of the lyrics. The mood immediately changes.