President Donald Trump arrives to address the 37th Annual National Peace Officers Memorial Service at the US Capitol in Washington.

President Donald Trump arrives to address the 37th Annual National Peace Officers Memorial Service at the US Capitol in Washington.

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Trump honors police officers: 'We will protect those who protect us'

President Donald Trump honored on Tuesday the sacrifices of police officers killed in the line of duty, calling them "among the bravest Americans to ever live" and vowing that his administration has a clear policy: "We will protect those who protect us."