Manager Mark Warburton says referee John Beaton cost Rangers a point after awarding the free-kick which led to Aberdeen's winner.
Hamilton move off the bottom of the Scottish Premiership but have to settle for a point at home to St Johnstone.
Rangers are assisting Police Scotland with enquiries after their team bus was vandalised before their Scottish Premiership defeat at Aberdeen.
Manager Derek McInnes is full of praise for James Maddison's fabulous late goal as Aberdeen beat Rangers 2-1 at Pittodrie.
Mark Warburton hit out at referee John Beaton after his contentious decision to award a free-kick led to Aberdeen's winner in their 2-1 victory against Rangers.
James Maddison scored a spectacular goal in the 90th minute to seal victory for Aberdeen in their 2-1 win over Rangers in the Scottish Premiership on Sunday.
Police are investigating after the Rangers team bus was vandalised outside an Aberdeen hotel.