Bill Walker, 71, was found guilty at Edinburgh Sheriff Court last month of 23 charges of assault against his three ex-wives and a former stepdaughter.
The Dunfermline MSP has refused to resign his seat despite public pressure and a motion signed by at least 90 MSPs demanding his immediate departure from Holyrood.
Members and supporters of Scottish Women's Aid, NUS Scotland Women's Campaign and Zero Tolerance gathered for a rally outside Holyrood yesterday afternoon as MSPs returned from their summer break. One of the organisers, Stacey Devine, NUS Scotland women's officer, said resigning was the "only decent thing" Walker could do.
"We're here to send a clear-cut message to Bill Walker that he's not fit for office and that he should not have the privilege of representing the people of Fife and the people of Scotland," she said.
Jenny Kemp, co-ordinator for Zero Tolerance, said: "We're here to send that very strong message to Mr Walker: you are not fit to be an MSP. Your presence in the Parliament demeans it..
"The second reason is to show that the Parliament's procedures are not fit for purpose and they must change. "
Walker, of Alloa in Clackmannanshire, is due to be sentenced on September 20. The former SNP MSP denied the charges.