The pair have been honoured as heroes by Portlands mayor and the FBI, but the president has remained silent, despite tweeting 10 times on Sunday on topics ranging from healthcare to fake news.
Pleas are now mounting on social media for Trump to make a statement on the attack, which was carried out by a suspected white supremacist.
Dan Rather, the veteran American journalist, led the charge on Facebook, calling on Trump to acknowledge the brave Americans who died at the hands of someone who, when all the facts are collected, we may have every right to call a terrorist.
Rather wrote in an emotional post that although the story may not neatly fit into a narrative you pushed on the campaign trail and that has followed you into the White House, the men were not killed by an undocumented immigrant or a radical Islamic terrorist.
This extremism may be of a different type than gets most of your attention, or even the attention in the press. But that doesnt make it any less serious, or deadly, he wrote.
Rather finished his post by noting that Portland might not be on the presidents radar because it is a liberal city, but it is still an American city. And you are its President.
By Sunday night the post had had 370,000 likes and 8,7000 comments. His tweet linking to the Facebook post had been liked 15,000 times.
Rathers sentiments were echoed by scores of Twitter users who were dismayed by the presidents failure to speak about the double murder.
Meanwhile, one of the teenagers who Best and Namkai-Meche stepped in to protect from the attack has paid tribute to the men. Destinee Mangum, who was travelling with a Muslim friend when the attack began, said the men had saved her life.
They lost their lives because of me and my friend, and the way we looked, she told KPTV in Oregon. I just want to say thank you to them and their family, and that I appreciate them. Without them, we probably would be dead right now.