The term ‘suffragettes’ was first used derogatorily to distinguish aggressive activists from peaceful ones.

Evidence

At this point they were still calling themselves suffragists, but after a few years of activism the Daily Mail would dub these new, feisty protestors ‘suffragettes’ – a derisory, diminutive term to distinguish them from women who stuck to peaceful means. — Neil MacGregor, A History of the World in 100 Objects, 1448

Categorization

• corroborated: 2 independent passages support this claim — Neil MacGregor, A History of the World in 100 Objects, 1448
• XREF: connects to: Ridicule and mockery defeated early feminist political campaigns