By Heather Schlitz

CHICAGO (Reuters) -On a chilly morning outside Nash Elementary School in a working-class Chicago neighborhood, teachers greeted students with the usual high-fives and hugs, while handing out sheets with red-bolded words proclaiming in capital letters: “Defend your rights under the threat of occupation.”

Four weeks into President Donald Trump’s “Operation Midway Blitz” deportation drive, mass arrests across the city – which have swept up parents on their way to school and entire families – have induced fear in immigrant communities and protectiveness from educators, according to city leaders, the teachers’ union, parents and immigration advocates.

Some 500 National Guard troops began deploying near Chicago on Wednesday under orders from Trump.

“My Latino students, the

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