Donald Trump Jr has torn into Instagram for deleting a photo of him posing with a US Army veteran.

The President's son hit out at the social media site after Army veteran Omar Avila claimed it had taken down a picture of him posing with Trump at a National Rifle Association event.

Avila, an Army veteran who lost his right leg and suffered third and fourth-degree burns across 75 percent of his body, posted that he 'honestly didn't know' why the picture had been taken down.

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Donald Trump Jr reposted a picture of him with Army veteran Omar Avila which was reportedly taken down from the soldier's account. It shows the pair posing together at an NRA event

Trump said Instagram had censored the picture 'presumably because it has me in it' and accused the social media company of 'bias'

Trump soon chimed in with his own upload, accusing Instagram of 'bias deleting' and saying it had 'presumably been removed because I'm in it'.

'There was nothing harsh or political in there and as usual it magically somehow "violated standards", presumably because I’m in it and that’s too much for the social media gods in California,' Trump Jr wrote.

'Omar aka "Crispy" is a vet severely wounded in conflict who has undergone I believe over 100 surgeries to fix the damage done.

'This man is amazing and he should not be censored, in fact we would be better off as a nation with many more with his attitude, demeanor, and patriotism.

'The bulls**t has to stop. If Instagram can censor a hero like this who the hell won’t they suppress???'

Avila had earlier posted on Instagram saying he 'wasn't sure what guidelines he had violated' and thanking Donald Trump Jr for his support.

'I honestly don’t know why this picture was taken down by Instagram... Not sure what guidelines it violates But here we go again... Thank you Donald Trump Jr for always taking the time out your busy schedule to say hello to chat,' Avila wrote on Instagram.

Trump Jr has previously clashed with several social media companies over their perceived censorship of conservative users.

Last month he penned an op-ed in which he slammed tech companies like Facebook and Twitter, claiming their treatment of conservatives could enact a system of censorship equal to the one used in China.

'Left unchecked, Big Tech and liberal activists could construct a private 'social credit' system — not unlike what the communists have nightmarishly implemented in China — that excludes outspoken conservatives from wide swaths of American life simply because their political views differ from those of tech executives,' Trump Jr., the son of the president, wrote in The Hill newspaper.

Tech companies argue they don’t single out conservatives for censorship.

The president's son has also accused social media of setting up their censorship of conservatives ahead of the 2020 presidential election.

'I had one week – this summer I called it out. I had something like 10 million organic impressions and zero new followers. It's statistically impossible,' he told Fox News last month.

'So it feels like it's a dry run where they are trying to suppress any kind of right-wing message – any kind of conservative message for 2020. I mean they're setting it up. They are just seeing how far they can get away.'

MailOnline has contacted Instagram for comment.