I don't think it's being civilised - it's being apathetic.
We'll get worked up about something we read in the Daily mail, but we won't get off our R-ses to do anything about it.
We have a fine tradition to dismiss and demean legitimate protest - so we always label them layabouts, anarchists, communists, peace-niks, yobs, loony lefts, loony-liberals, do-gooders or animal rights nutters.
The sizes of rallies and gatherings are played down in the media or ignored altogether - (unless, of course, it all kicks off, where the resulting violence is the ideal weapon with which to discredit the whole protest)
When we British feel stongly about something, what do we do?
March in protest? Make our voices be heard? Gather together to show our strength of feeling?
No, we tut, sigh, then turn the newspaper page over, and have a good moan about it in the pub. A very few may feel so incensed that they might think about writing a letter to the Editor or their MP - and fewer still, will actually get round to writing one.
Such is our apathy that even our right to protest has been eroded. (Still, who needs that when I can sign an on-line petition, eh?)
So what would really cause the British to rise up in violence? Government corruption? Erosion of our Civil liberties? Taxation? Pollution? Anything that interferes with our right to drive our cars?
No.
A few people in different coloured shirts kicking a ball around? Yes.