"I think he'd be so happy," Sarandon said. "And all these people honoring him with LSD."
Susan Sarandon leads Burning Man memorial for LSD guru Timothy Leary →
She said she could hear in his voice that he regretted his role in the 2013 attacks, which left three people dead and more than 250 wounded.
Tsarnaev's defense rests after Sister Helen Prejean says marathon bomber is truly sorry →