Prentice told a radio call-in show that Albertans should "look in the mirror" if they want to know who is responsible for the current fiscal situation in Alberta.
The protesters say Prentice is the one who should look in the mirror, and brought with them hand-held mirrors of various shapes and sizes.
Prentice has been ridiculed and criticized widely on social media after he told Albertans to look in the mirror to understand who is responsible for the province's financial state.
He's shrugged off accusations that he insulted Albertans, and joked with a Manning Centre audience in Ottawa that prior to a TV interview, he was offered a mirror to get rid of his makeup and turned the offer down.
Protesters at the legislature chanted, "Mirror, mirror, on the wall, who's to blame for this shortfall?"
"Two days ago our premier blamed Albertans for Alberta's fiscal mess and he's stuck by that," Alberta Federation of Labour president Gil McGowan said.
"He's had two days now to retract those statements, but he has doubled down."
Prentice has said his call-in show comment had been taken out of context. He said Albertans got into the current economic circumstance together and the only solutions will be to get out of it together.
Provincial opposition leaders have called on him to apologize, given that it was his own Progressive Conservative party that managed the province's books for more than 40 years.
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