Controversy centered on whether the second, probably fatal shot was necessary.

It opened a controversy centered on a word, and that limited field is the subject of this language column.

But their last series, two years ago, was particularly controversial, and the controversy centered on Pippen.

The controversy may have centred around the lyric "David was small but, oh my!"

Until recently, any controversy over donor insemination has centered on quality control.

In Europe, the controversies centered on the issues of homeschooling, health, and religious freedom.

Much controversy has centred on the concept of 'functional importance'.

The controversy has centered on immunotherapy's effectiveness; in many cases it doesn't work.

Nevertheless controversy still centres around the interpretation of dinosaur structure.

The controversy centred on the issues of the underground movement submitting to public political leadership and fighting the British.