It's Google's "Remove First, Ask Later" policy. A certain local political party issues DCMA claims to videos containing recordings of controversial statements made by its leaders on the ground it contains "copyrighted material", and it pulls off successfully the stunt and the videos are erased (Imagine Fox News issuing a DMCA takedown on John Stewart videos because of a 5 second video or a parody of a certain anthema). It crept also to Google's search engine: and now there's loads of ChillingEffects links in a Google News page around a certain "touchy" subject or scandal.My question was what you, personally, have been searching for that is bringing up DCMA takedown notices. Is this somehow affecting you specifically?
It's the Scientology tactic being emulated by a certain... real-life political organisation (well, they technically have the same modus operandi even in real life). And it works efficiently to suppress dissident political views.
I should add that if they really wanted to be sneaky about it they could just take the search results out completely and not even bother with the DCMA notice.