VIDEO: #MarriageEquality in Ireland was one of Twitters most talked about subjects in 2015

The hashtag #MarriageEquality, which dominated social media around Ireland’s historic vote to legalise gay marriage, marked one of the most talked of moments of the year on Twitter.

In its review of the year, the social media site revealed #JeSuisParis hashtag, along with #PrayForParis, used to show solidarity with the French capital in the wake of its second terrorist attack, were the most used on the micro-blogging site in 2015.

This was followed by the Black Lives Matter movement, which began in the US and has become a social campaign discussing police brutality against black citizens. The hashtag or phrase was used more than 9m times in 2015.