mounted
v.v. to organize and start a big activity, like a search or a protest. It can also mean to get onto something high, like a horse or a bike.
v. to organize and initiate a concerted effort or campaign; alternatively, to climb onto a horse, bicycle, or platform for the purpose of riding or display.
The police mounted a massive search for the missing hiker.
Local residents mounted a campaign to save the historic library from being demolished by developers.
As the evidence of corruption became public, the opposition party mounted a formal challenge to the government's latest legislative proposal in the high court.
From mount + -ed.
Transitive when referring to organizing efforts or climbing onto objects; often used in the past tense to describe established campaigns.