Syrian refugee, Hassan Akkad from Damascus, “felt oppressed” when shouted down by Stop the War anti-Trump protesters.
The protest in Downing Street on Friday evening was against the American attack on a Syrian airbase.
Mr Akkad left Syria in September 2015. He says he was imprisoned twice and tortured for protesting against Assad’s regime.
He says of the Stop the War protestors: “I didn’t see them protesting against the chemical attacks, I didn’t see them protesting against Putin bombing Syria for the last two years.
“I wanted to go to that protest and I wanted to observe.
“I went to the protest and I saw a group of 30 people with placards, not a single mention of Assad.
“All the placards are against Donald Trump and they’re repeating baseless slogans with their megaphones.”
He added: “I went to them respectfully and said, ‘Listen I’m a Syrian refugee who lives here and I have an opinion, it’s a protest about Syria I want to say something’.
“They didn’t even address me, they ignored my existence. With their megaphones they went louder and louder and the organisers told them to carry on.”