Today in over 800 cities in the US and worldwide, millions of people marched against gun violence in protests aimed at highlighting the countless deaths and the ineptitude of governments to tackle the problem.

A number of well-known singers, actors, models and many more joined marches around the globe and posted their views on Twitter and social media, as well as interviews on news channels. Paul McCartney spoke to CNN about the need to curb gun violence, referencing John Lennon's fatal shooting in 1980, saying that "one of my best friends was killed in gun violence right around here, so it’s important to me."

Here's a selection of messages from the day.








Via Twitter / Instagram