The online world can be a breeding ground for hate. But why do some people behave the way they do on social media? In each episode the BBC's Disinformation and social media correspondent Marianna Spring — one of the most trolled BBC reporters — dives into her inbox and investigates a different extraordinary case of online hate to find out. She meets the people at the heart of these conflicts, and in some cases bringing them together, to see if understanding — even forgiveness — is ever possible.