There's your Communist redshirt with a megaphone clutched in one hand
We often talk about the Red-Green alliance between the Marxists and Islamists, but rarely does it come as carefully color coded and uniformed as it does here in this photo of an anti-Israel protest on the streets of England.
There's your Communist redshirt with a megaphone clutched in one hand screaming something about colonialism and the working class, even though the last time he encountered a member of the working class it was when he needed to summon a plumber. And there's your Islamist in Green waiting for his opportunity to chant "Khaybar, Khaybar ya Yahood" before going back to university to write an engineering paper.
This is what a proper well-rounded fifth column looks like.