Todd Spangler NY Digital EditorAt the Senate Judiciary Committee’s four-plus-hour hearing Tuesday with Facebook’s Mark Zuckerberg and Twitter’s Jack Dorsey, the two social-media CEOs faced attacks from Republicans and Democrats alike about their policies.GOP lawmakers accused Facebook and Twitter, as they have repeatedly, of censoring conservative viewpoints while Democrats (as they have done previously as well) blasted the companies for not doing enough to curb hate speech and