On 24th June 1885 the UK Parliament passed a number of laws, allegedly for purposes of religious compliance but which impacted almost uniquely on the working and lower middle classes.  On 24th June the workers mobilised to protest these laws, congregating in Hyde Park, where the aristocracy and their admirers in the capitalist class paraded.  Karl Marx was there — click on this link for his report: Workers’ demonstration 24 June 1855 in Hyde Park