Whistle becomes key tool in protests against Trump’s ICE crackdown

Protesters have been blowing whistles to alert people to agents' presence - and that has upset figures on the right

When Justin Vernon of Bon Iver appeared on the red carpet at the Grammy awards he was wearing an accessory that has become a must-carry for activists in neighborhoods targeted by ICE: a whistle.

The whistle has become a key part in the defense against Donald Trump's aggressive immigration crackdown, used to alert people to the presence of agents. But it has also become a target for the right, who have branded whistles hearing-loss-causing machines" and said the act of blowing a whistle may constitute assault".