The story of Mouseland was a story first told by Clarence Gillis, and later and most famously by Tommy Douglas, leader of the Saskatchewan Co-operative Commonwealth Federation (CCF) that became the New Democratic Party of Canada, both social democratic parties.
[1] The mice voted in black cats, which represented the Progressive Conservative Party, and then they found out how hard life was.
A mouse got an idea that mice should run their government, not the cats, was accused of being a Bolshevik, and was imprisoned.
A variation of this story is told in Douglas Adams' novel So Long, and Thanks for All the Fish, involving a democracy where people vote for lizards as their leaders.
[2] In 2010, Wall carried his parody further by giving "A Mouseland Update" to the Saskatchewan Party's Annual Convention.