The demonstration was an assertion of the right to peaceful protest.

这次示威游行是使用和平抗议权。

《牛津词典》

I started to protest that this was ridiculous, that two months was nothing, that but then I realized that she was right.

我开始反抗，这很荒谬，2个月哪里长。但是我又一下子意识到她是对的。

youdao

You are right, Fanny, to protest against such an office, but you need not be afraid.

范妮，你不肯帮这个忙是对的，不过你用不着担心。

youdao

Webster said the North also had a right to protest statements by southern leaders about working conditions in the North.

VOA: special.2009.04.02

Then Webster said the North also had a right to protest about some things the South had done.

VOA: special.2009.04.02

But black groups in Montgomery considered her to be the right citizen around whom to build a protest because she was one of the finest citizens of the city.

VOA: special.2009.03.08

"Police need to accept that people have a right to protest, " he added.

BBC: G20 officer 'hit me across face'

Those who demonstrated against Mr Thaksin have a legal right to protest peacefully.

ECONOMIST: Thaksin's legacy

This result may reflect some people's belief in the right to protest, even if they don't back the aim of a particular demonstration.

BBC: Opinion poll indicates NI voters would reject Irish unity