Like Toronto, NY and other film festivals, Sundance in the Plague Year was virtual. It reduced its scope and crammed 73 films into six days. Nothing unspooled, it all streamed digitally, with 28 satellite drive-in sites scattered around the country. Here in the East it was freezing, and we got the snow Park City didn’t. Our film critic Harlan Jacobson sees black and white in color at Sundance this year.