<br /> It’s going to be a busy day for Facebook CEO Mark Zuckerberg.<br />A firm working with the Trump campaign used stolen data from 50m Facebook users in the last election.<br />US and UK publications and politicians are outraged.<br />They want more scrutiny of the deal Facebook had with Cambridge Analytica.<br />Facebook stock has plunged by nearly 10%. Some users are fleeing the social media platform <br />
