The United Food and Commercial Workers union, a loud critic of Walmart, criticized convention organizers for accepting the cards, arguing that the world's largest private employer doesn't represent the party's values.
The Iraq war made him a loud critic of Tony Blair.
The state Republican chairman, Edward F. Cox, has been a loud critic of Mr. Silver, a Manhattan Democrat.
He is also a loud critic of the government of President Mahinda Rajapaksa.
Representative Trey Martinez Fischer, a San Antonio Democrat who has supported Mr. Straus in the past, has become a loud critic.
The governor of Niigata, which hosts TEPCO's Kashiwazaki-Kariwa plant, the world's largest, is a loud critic of nuclear power.
Mr. Daley was a loud critic of recent financial regulatory reforms and has been obsessed with getting Democrats to be more subservient to business.
At crucial moments in New York's history, the City Council has served as a check against — and a loud critic of — the mayor's power.
Her husband, a former agent of the K.G.B. (its successor agency is the F.S.B ., had been a loud critic of that organization and of President Vladimir Putin.
