The ultimate troll would be to wear a bunch of blue lives matter shirts and take pictures with them, thank them, hand them water....them cacs would be like.
"

, uhh, thank...thank you, but no thanks...we're...we're on duty...we're just doing our jobs....."
"No, you guys are heroes! We love you! We thank you for your presence and service! Take a picture with us!"
"...uhh...uh..we..we're...we can't...umm..." **avoids the cameras**
Meanwhile they pick up and hug little white kids, smile for the camera, thumbs up