A quick response to an old boogieman
"Marxism" is a philosophy based on the dream of a society run for the benefit of all its members rather than the privileged few
Whatever the personal, long term views of Corbyn and McDonald are, their stated objectives are to make slightly fairer the present society by removing some of its greater anomalies - most Marxists I know would regard this as 'reformism'
If Corbyn's reforms took root, the gap between rich and poor would be narrowed slightly, workers would be able to afford to live in areas where there is work for them (unlike now) and maybe even the victims of the Grenfell Tower disaster would now have permanent homes instead of remaining in temporary accommodation.
This sort of humanity is an anathema to those who shriek "Marxism" whenever such objectives are suggested
Jim Carroll