An 80-year-old grandfather has got an equal marriage tattoo in order to support his gay grandson.

Grandpa Frank decided to get the equal sign, as popularized by the Human Rights Campaign, after his grandson Joe came out to him.

A video documents the process as Frank tells his tattoo artist about how proud he is of his grandson.

On the YouTube video, the description says: ‘About a month ago, Joe got an equal sign tattoo in support of human equality, and Grandpa Frank wanted to show his love and support, too.

‘The world is really blessed to have people like Frank, who not only love unconditionally, but also accept everyone for who they are.’

Last year, nearly three million people changed their Facebook profile pic to the pink-on-red equal sign in order to support marriage equality.

Check out the video below:

pink-on-red equal sign