Following the win, Walker posted photos of himself and his City team-mates celebrating their latest trophy on the social media platform through his story.
But while he should be celebrated for helping City to another piece of silverware, Walker has revealed he has been subjected to vile racist abuse in the aftermath of the final.
The right-back shared a screenshot of a direct message from an account which said “Hello you unlucky sole you have fallen victim to one of my racial ratios”, before going on to use several disgusting racial slurs.
Walker tagged Instagram on the post, with the message “When is this going to stop?”.
Facebook, who own Instagram, have since said the account was disabled before Walker’s post and it is in the process of introducing a new tool which, when turned on, will mean no one has to see abusive messages again.
Walker is just the latest Premier League player who has been subjected to racist abuse in recent months.
Manchester United’s Anthony Martial and Marcus Rashford, Liverpool’s Trent-Alexander Arnold and Sadio Mane, and Chelsea’s Reece James have all also suffered abuse.
The slurs directed at Walker come two days after football authorities in England announced a social media boycott in response to continued online abuse of players.
The boycott involves clubs and players from the Premier League, EFL and Women’s Super League, as well as governing bodies such as the FA.
It will take place from Friday across a full fixture programme, with club’s not positing from 3pm on 30 April to 11.59pm on 3 May.