The left when asked to back up their claims invented a word for what they themselves are doing: https://en.m.wikipedia.org/wiki/Sealioning >Sealioning (also spelled sea-lioning and sea lioning) is a type of trolling or harassment that consists of pursuing people with persistent requests for evidence or repeated questions, while maintaining a pretense of civility and sincerity.[1][2][3][4] It may take the form of "incessant, bad-faith invitations to engage in debate".