Signs bearing hateful anti-immigrant messages were found outside a Dallas elementary school in a largely Hispanic neighborhood Saturday morning, Dallas ISD trustee Miguel Solis said.

The signs were found at Foster Elementary, among the schools represented by Solis, whose district includes the area around Love Field and parts of northwest and central Dallas.

Solis posted images of the handwritten cardboard signs on Twitter late Saturday afternoon. Among the statements penned in marker, using a pejorative term for illegal Mexican immigrants, were "Cut 'em no slack. Mojados go back" and "No mas mojados. Trump 2017."

"2mrw, we march against this type of hate," Solis posted, referring to Sunday's planned march for immigration reform, expected to draw thousands to downtown Dallas.

The incident drew condemnations from Dallas Mayor Mike Rawlings and Mexican consul Francisco de la Torre, among others.

Rawlings called the signs "disgraceful." "I stand with you against this hate speech," he said in reply to Solis.

Solis, who was alerted to the situation by Foster principal Zack Hall and community members, said a neighbor found one of the signs early Saturday before children arrived for weekend classes. The neighbor removed the sign and told staff, who searched the grounds and found the other three signs.

Foster is about 90 percent Hispanic, Solis said, and the neighborhood is largely middle-class, with many kids living in area apartments.

He said Hall planned to inform DISD police and ask for increased police presence over the next week.

Solis said the incident illustrates why Sunday's march is necessary.

"It's an opportunity to bring diverse communities and coalitions together and to definitely state that the things we saw today have no place in America," he said. "Tomorrow (Sunday) is a signal that a small act of hate can be drowned out by a large act of love."