The CBC has filed a copyright infringement lawsuit against the Conservative Party over the use of clips on its Not As Advertised website and the use of debate clips on its Twitter feed. The lawsuit, filed yesterday in federal court, claims that a campaign video titled "Look at What We've Done" contained multiple excerpts from CBC programming in violation of copyright law. Moreover, the CBC also cites tweets that included short video clips of between 21 seconds and 42 seconds from the English-language leaders' debate. The CBC argues that posting those clips on Twitter also constitutes copyright infringement.