Omar Torres of the YMCA of Metropolitan Los Angeles with workers (Omar Torres)Last year, the Los Angeles YMCA held backpack giveaways for migrant families and needy students in public parks and community centers. “We’ve had to modify how we do things,” said Omar Torres, senior director of civic engagement for the YMCA of Metropolitan Los Angeles. It’s a drama unfolding in the schools of Los Angeles, where educators have taken unprecedented steps to shield kids from federal seizure or deportation by using every legal method at their disposal. Despite those steps, Noguera said that the fears of many LAUSD families are well founded. In an emailed statement, a senior official at the Department of Homeland Security said investigators would continue to search for undocumented children in Los Angeles and around the country.