A Saturday Night Live writer has been blasted for saying 10-year-old Barron Trump will become 'this country's first homeschool shooter' in a now-deleted tweet.

Katie Rich fired off the tweet on Inauguration Day, only to delete it three hours later after she faced a barrage of criticism.

The comedy writer set her account to private, but Twitter users branded her 'scum', called for her account to be blocked, and urged NBC to fire her.

She wrote: 'Barron will be this country's first homeschool shooter' and faced a barrage of criticism for the 'tasteless' joke

SNL writer Katie Rich fired off the tweet on Inauguration Day, only to delete it three hours later and set her account to private after she faced a barrage of criticism

The 10-year-old accompanied his family to Washington DC this weekend, where he was thrust in the limelight during his father's inauguration

Barron will be staying put in New York with Melania Trump until he finishes out the year at the Columbia Grammar and Preparatory School

Just after noon on Friday, Rich wrote: 'Barron will be this country's first homeschool shooter'.

Critics slammed the writer for her 'tasteless' joke and called her 'sick' and 'disgusting' for targeting Trump's youngest child.

Sam Janney, tweeting under the username @PolitiBunny, wrote: 'Kids are off limits...and the internet is forever. Shameful @katiemaryrich'

Dennis ONeill wrote: '@latiemaryrich what's your problem. Do you get off picking on little kids? No wonder SNL is garbage these days. You work for them.'

Some Twitter users demanded that she apologize, while several others called for NBC to terminate her contract.

Rich deleted the tweet hours later and set her account to protected, even though that seemed to anger some social medias even more as they continued to berate her online.

Some Twitter users demanded that she apologize, while several others called for NBC to terminate her contract

The 10-year-old, who accompanied his family to Washington DC this weekend, has been thrust into the limelight as the first son to live in the White House since John F Kennedy Jr.

But Barron will be staying put in New York with Melania Trump until he finishes out the year at the Columbia Grammar and Preparatory School, where tuition starts at $44,120 for those enrolling in pre-K.

Modern Family actor Julie Bowen posted a series of lighthearted posts expressing her dismay for the new president on her Instagram on Friday.

She shared several screenshots of Barron during the inauguration - and faced a similar barrage of commenters who slammed her for singling out the boy.

Modern Family actor Julie Bowen also posted a series of lighthearted posts expressing her dismay for the new president on her Instagram on Friday

She shared several screenshots of Barron during the inauguration. She joked that the 10-year-old was busy on his Gameboy in one caption

Bowen posted a photo of Barron looking down and wrote: 'I think Barron is on his Gameboy. Can't say I can blame him.'

In another photo, showing the 10-year-old with both hands around his head looking bewildered, Bowen wrote: 'Barron, a voting majority shares your horror. #barronforpresident'

The actor posted another photo of the National Mall looking relatively empty, and wrote: 'Lotta empty space at "the big show"'

Trump supporters expressed their anger at Bowen, calling her a 'pathetic celebrity' and a 'jerk'.

But other stepped in and defended Bowen. One Instagram user, @nicalips1972 wrote: 'She's not picking on him, lighten up! His dad says whatever he wants, why can't the rest of us!'

User Sealskim wrote: 'Thank you Funny Julie Bowen...we will need humor to get us through the next 4!'