Watch These Politicians Get Mercilessly Trolled

Be warned: When it comes to trolling, no one is safe.

Where there's a comment section, there's a troll just laying in wait.

The dictionary defines trolling as making "a deliberately offensive or provocative online posting with the aim of upsetting someone or eliciting an angry response from them." And on social media, where trolling is practically a sport, it can take on a lethal meaning.

No one fields more troll volleys than politicians (though some might call it karma). From Barack Obama to Hillary Clinton, everyone has faced the burn of acerbic trolling.

So, sit back, relax, and watch these politicians get trolled.