Of course it would be easier for the police to catch bad guys if they had full-text search access to all conversations and content, worldwide. Source? I'd like

Of course it would be easier for the police to catch bad guys if they had full-text search access to all conversations and content, worldwide. Source? I'd like to know if that's even true, how could they possibly filter and follow up on every lead their software finds? The NSA and other agencies are facing problems with having too much data: https://www.zdnet.com/article/nsa-whistleblower-overwhelmed-with-data-ineffective/ https://www.zdnet.com/article/nsa-whistleblower-overwhelmed-...