The phrase "attempted protest" is correct and usable in written English.
It can be used to describe an effort or action taken to express dissent or opposition, even if it was not fully successful.
Example: "The attempted protest at the city hall drew a small crowd but was ultimately dispersed by the police."
Alternatives: "failed protest" or "unsuccessful demonstration".
"The Moscow authorities have once again behaved like cavemen," said Nikolai Alekseyev, the organizer of Saturday's attempted protest.
Yet in the weeks that have followed, peaceful demonstrations have been banned by the authorities, and attempted protest marches violently repressed.
In some cases the residents took to the roofs with placards in an attempted protest, and refused to come down.
If there are, however, flotilla folk who truly seek martyrdom, their chances, they should take note, do rise dramatically with an attempted protest at Assad's office or Iran's prisons.
Residents have attempted protests and numerous legal complaints to no avail – Wunsiedel is still treated as a place of pilgrimage for neo-Nazis all over Europe.
She later attempted another protest, on 19 May, in the religious centre of Kairouan, where she was arrested.
On October 11, members of the national police and state security forces arrested 17 youth who attempted to protest against the president, and tortured them in a public school.
Police arrested several members of the liberal opposition party Yabloko as they attempted to protest against the new bill outside parliament.
According to the article, workers who attempted to protest the NYU contractors' conditions were promptly arrested.
Earlier in the month, a group of women who attempted to protest such treatment were abused themselves as they marched in the square.
Bamberger was involved in the intense confrontation, which also included notable white supremacists, earlier this month when a student named Shiya Nwanguma attempted to protest at the rally.
