The election was one of the most controversial in American history.
The move was one of the most controversial in major professional sports history.
Street View has been controversial in different countries for various reasons.
Profit levels have also been controversial, especially in the first year.
Most have not got very far, but were quite controversial in their time.
The idea of separating people based on class is controversial in itself.
"But some of the great art on this earth was controversial in its time."
The situation has been controversial, particularly in the case of children.
This is the only developed country where it's been even controversial in recent times.
The film was controversial in different parts of the world.