The right to protest is under threat in Britain, undermining a pillar of democracy

Sweeping arrests of peaceful demonstrators, along with government officials' labeling environmental activists extremists, mark a worrying departure for a liberal democracy, critics of recent measures say.

For holding a sign outside a courthouse reminding jurors of their right to acquit defendants, a retiree faces up to two years in prison. For hanging a banner reading Just Stop Oil off a bridge, an engineer got a three-year prison sentence. Just for walking slowly down the street, scores of people have been arrested.

They are among hundreds of environmental activists arrested for peaceful demonstrations in the U.K., where tough new laws restrict the right to protest.

The Conservative government says the laws prevent extremist activists from hurting the economy and disrupting daily life. Critics say civil rights are being eroded without enough scrutiny from lawmakers or protection by the courts. They say the sweeping arrests of peaceful demonstrators, along with government officials labeling environmental activists extremists, mark a worrying departure for a liberal democracy.