Jonathan May-Bowles pleaded guilty last week to assaulting the 80-year-old media tycoon as he gave evidence to the House of Commons Culture, Media and Sport Committee in July.
Defense lawyer Tim Greaves said the part-time standup comic intended to make a statement “in the least harmful way possible.”
“Slapstick and throwing pies dates back to the 1900s as a recognized form of protest,” he said.
But district judge Daphne Wickham criticized May-Bowles for disrupting “a parliamentary process, which as you know conducts itself with dignity and in a civilized fashion.”
Handing down the sentence at London’s City of Westminster Magistrates’ Court, the judge said she took into account the fear of injury felt by Murdoch, who could not have known what was in the foam pie.
She said May-Bowles would serve half the sentence and ordered him to pay 265 pounds ($430) in penalties and costs.