The opposite of a promoter is a detractor, someone who undermines or speaks against something.
A person who speaks out against something is often referred to as a critic, dissenter, or opponent.
Ronald Reagan Speaks Out Against Socialized Medicine was created in 1961.
It means - one who speaks sweet
He spoke against about racism.
claudio speaks against hero
One who speaks for another
he speaks French
res ipso loquitor
That was in Des Moines, Iowa, on September 11, 1941
The song title speaks for itself.
rebel?