New Delhi, Sept. 22 -- President Donald Trump appeared visibly emotional during the memorial service for conservative activist Charlie Kirk at State Farm Stadium in Glendale, Arizona. Photos from the event showed Trump being comforted by his son, Eric Trump, who rubbed the 79-year-old President's back, a father-son moment that quickly went viral on social media.

And, in an unexpected and lighthearted moment, Donald Trump Jr. impersonated his father during the memorial, eliciting laughter from the audience. He said, "You know, Don, you're getting a little aggressive on social media, Don, relax!"

The camera then captured President Trump and UFC CEO Dana White laughing and smiling during the impersonation.

Trump Jr. also paid tribute to K...