The Federal Court of Canada has dismissed a lawsuit brought by the Canadian Broadcasting Corporation against the Conservative Party of Canada, which the CBC claimed had wrongly used its content (e.g. news clips) in so-called "attack ads" during the 2019 election advertising. The Conservative Party had reproduced certain of CBC's news content in its election advertising, in ads plainly directed to attacking the Prime Minister.  While the Judge agreed that the CBC's content was protected by copyright law, he found that the Conservative Party's use of that content in its attack-ads was "fair dealing" (i.e. use for the allowable purpose of criticizing the Prime Minister and his actions) and thus was not copyright infringement. 

Here's a link to the Court's decision 

Court Decision