Authorities in the European Union and Britain built momentum Tuesday for tougher oversight of the technology industry, as they introduced new regulations to pressure the world’s biggest tech companies to take down harmful content and open themselves up to more competition.
In Brussels, European Union leaders unveiled proposals to crimp the power of “gatekeeper” platforms like Amazon, Apple, Facebook, Google and Microsoft, which policymakers argue deserve more oversight given their outsize influence. The proposed EU laws would require the companies to do more to prevent the spread of hate speech and sale of…