Jurgen Klopp spoke about his anger at half-time after Liverpool fought back to pile the pressure on beleaguered Swansea manager Francesco Guidolin.
Liverpool - who lost Adam Lallana to a first-half groin injury which has ruled him out of England's World Cup qualifiers against Malta and Slovenia - were below-par in south Wales as they trailed 1-0 at the break to an early Leroy Fer goal.
But Roberto Firmino and James Milner rewarded a much-improved second half performance to secure a 2-1 win and hand Liverpool a fourth straight Premier League victory.
'I was very angry.