Twitter trend sees over 100,000 people share personal stories of discrimination, including US comedian Sarah Silverman and other well-known figures

Unilever, which is behind brands such as Ben & Jerry's ice cream and Dove soap, says it took move to protest the amount of hate speech online

Social media giant says US president's threat to use 'serious force' against demonstrators in US capital breaks rules over inappropriate content

Amused by the attention, the activist goes on to troll the president by temporarily changing his account name to causes the president opposes

After president posts clip on CNN's supposed fake news agenda, social media company adds a warning that the footage is 'manipulated'

Companies say they received a claim against campaign clip; Instagram also removes the video, though it remained available on YouTube on Friday night

Presidential social media account briefly posts, then deletes, misinformation that security barriers filled with rocks intended to aid rioters; 6,200 people 'like' it in an hour

Move comes after Twitter took unprecedented stand by hiding a post by the US president that it said promoted violence

While both companies' CEOs say they are not 'arbiters of truth,' Twitter has added warnings on some recent posts by the president, whereas Facebook left identical remarks alone

The new escalating war between the president and social media is born of long-gestating divisions and is fueled by the very elements that make modern discourse so polarized