However, the Viva La Bam star's tweets in memory of his friend were also infused with anger directed toward film critic Roger Ebert, who reacted to the tragedy by tweeting: "Friends don't let jackasses drink and drive."
"I just lost my best friend I have been crying hysterical for a full day and piece of s--t roger ebert has the gall to put in his 2 cents," Margera wrote. "F--k you! Millions of people are crying right now, shut your fat f--king mouth!"
Ebert's comment no doubt stemmed from the fact that the late star had posted a picture of himself drinking with pals a few hours before the car crash that killed him and his passenger, Zachary Hartwell.
However, it has yet to be determined if alcohol was indeed a factor in the accident. An autopsy was conducted, but results won't be known until toxicology tests are completed in four to six weeks.
Margera wasn't the only person who lashed out at Ebert—Perez Hilton also felt the critic had responded "insensitively." But Ebert defended himself by tweeting: "Perez Hilton readers agree with me and not with Perez about my tweet on Ryan Dunn. He drank, he drove, 2 people died."
UPDATE at 9:30 a.m. PT: This morning, Ebert took to his blog to clarify his tweet.
"To begin with, I offer my sympathy to Ryan Dunn's family and friends, and to those of Zachary Hartwell, who also died in the crash. I mean that sincerely. It is tragic to lose a loved one," he wrote. "I also regret that my tweet about the event was considered cruel. It was not intended as cruel. It was intended as true."
Ebert admits he had "no way of knowing if Ryan Dunn was drunk at the time of his death" and "I was probably too quick to tweet. That was unseemly."
However, he is sticking with the original intent of his tweet.
"I do know that nobody has any business driving on a public highway at 110 mph, as some estimated -- or fast enough, anyway, to leave a highway and fly through 40 yards of trees before crashing. That is especially true if the driver has had three shots and three beers. Two people were killed. What if the car had crashed into another car?"
Who's side are you on, Margera's or Ebert's? Weigh in below.
(Originally published June 21, 2011, at 8:46 a.m. PT)