Up to 500 demonstrators gathered outside Donald Trump fundraiser in San Antonio

San Antonio, Texas -- June 17, 2016 -- People supporting Republican presidential candidate Donald Trump's visit to San Antonio gathered near his private fundraiser at Oak Hills Country Club. Ray Whitehouse/for the San Antonio Express-News less San Antonio, Texas -- June 17, 2016 -- People supporting Republican presidential candidate Donald Trump's visit to San Antonio gathered near his private fundraiser at Oak Hills Country Club. Ray Whitehouse/for ... more Photo: Ray Whitehouse, Photographer / For The San Antonio Express-News Photo: Ray Whitehouse, Photographer / For The San Antonio Express-News Image 1 of / 123 Caption Close Up to 500 demonstrators gathered outside Donald Trump fundraiser in San Antonio 1 / 123 Back to Gallery

Donald Trump left San Antonio after attending an invitation-only luncheon that drew hundreds of demonstrators — pro and con.

The noon event at Oak Hills Country Club was closed to the public, but 500 demonstrators lined the 5400 block of Fredericksburg Road.

Trump arrived at the club about 12:15 p.m., slightly behind schedule, and left the Alamo City on a flight bound for Houston around 2:15 p.m. The Republican nominee will be attending a fundraiser and a rally in Houston.

Police were vigilant about avoiding conflict between protesters and Trump supporters, who generally were separated by traffic on Fredericksburg Road. But occasionally, a Trump supporter would infiltrate the crowd of protesters, under the watchful eye of police.

"Get used to that wall," said one man who was followed by a police officer.

"Racist scumbag!" one of the Trump protesters replied.

Some of the protesters policed themselves. When emotions flared, protesters reminded one another to "keep it peaceful."

SAPD Sgt. Dave Anderson said that officers were attempting to keep pro- and anti-Trump protesters separated.

Valerie Campos, 20, anti-Trump protester and point-of-contact for the Peace Keepers, an activist group, said: “We did have a meeting personally with (SAPD) yesterday … to make sure that everything goes off peacefully.”

When asked what she would like to say to Trump, Campos said: "We are willing to love you as long as you're willing to love us."

Demonstrators were confined to the sidewalks near the entrance to the members-only club, where invitees are paying from $500 to $250,000 to attend.

Staff writer Rye Druzin contributed to this report.

jgonzalez@express-news.net

Twitter: @johnwgonzalez