I have found it best to just stick to the facts, and don't let them sway you into an emotional debate. If they can only offer emotionally charged statements or insults, then they have no base. Call them on their bullshit, and ask them direct questions. The only reason they would use a tactic like that, is so they can avoid actually debating facts. Sephan's video "Feminist Straw Woman Attacks!" is a good example of this.