Houston has had a troubled past with pollution of many types.

One reason is that it and its principal officers have a troubled past.

Given that, the Rangers seemed certain to emerge from their recent troubled past, at least to some degree.

The fighter with the troubled past is not exactly a radical figure in boxing.

At the same time, District 12 has had a troubled past.

The album had much of its focus on Taylor's troubled past and family.

But they declined to identify them or speak about their troubled past.

The extent of his troubled past is not so well known.

Safe as he feels, Oliver dreams one night of his troubled past.

The fact that the victim is former law enforcement with a troubled past makes for a great story.