Spain will launch a tool to measure hate speech on digital platforms as part of a broader strategy to increase oversight of social media companies, Prime Minister Pedro Sanchez said on Wednesday. The country announced a wider plan last month to regulate social media, including a ban on its use for younger teenagers and measures to hold platform executives accountable for illegal or hateful content hosted on their services. The new tool, called HODIO — an acronym in Spanish for Footprint of Hatred and Polarisation — will allow the government to systematically track the presence, amplification and impact of hate...