The groove or rhythm of politics for an increasing number of people is to launch a protest against an issue. It’s now commonplace in London, for example, to discover a protest about a new policy just announced. This is single-issue protesting because the ideology is just a bedrock.
It isn’t the point. The day to day ramifications of what’s said and done inside halls of power is the point. Therefore, many have found it more convenient to latch onto the latest idea from Whitehall by walking or pounding the streets looking for support to oppose it.