Crossword Genius

What causes communal tension? It’s Americans out of order (12)

Ross

I believe the answer is:

sectarianism

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'what causes communal tension?' is the definition.
I can't tell whether this defines the answer.

'it's americans out of order' is the wordplay.
'out of order' is an anagram indicator.
'its'+'americans'='itsamericans'
'itsamericans' with letters rearranged gives 'SECTARIANISM'.

Can you help me to learn more?

(Another definition for sectarianism that I've seen is " Adherence to religious groupings".)

I've seen this clue in The Times.
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