European publishing groups, especially in Germany, have been suing news aggregators for copyright infringement, leading Google and other companies to reduce the content they copy in search engine or summary results, as described here in a story from 2016 (story).
Germany and Spain have also passed “search engine taxes” as “anti-piracy laws” which may remind one of the SOPA battle in the US in late 2011. The result is that some smaller publishers that do “news aggregation” left Spain completely. These laws were passed apparently under pressure from legacy print newspapers that could not survive Internet competition.
Theoretically, this sounds like a “hyperlink tax”. In the US, back around 2000, a few companies tried to ban others sites (even amateur sites) from deep hyperlinks without permission (on the theory that this denied them front page ad revenue) until courts told them that this was no different from footnotes on a term paper. It even seems potentially connected to the European idea of “moral rights” which is now up for comment with the US Copyright office.
There would be an interesting question whether blogs like mine (with their heavy use of labels) to :"connect the dots" really amount to "news aggregation" under European (and eventually US) law.