Mondale is alive, and was in attendance.
Westboro Baptist Church, the extremist group from Topeka, Kansas largely made up of members of Fred Phelps' family, planned to picket the late Sen. George McGovern's funeral today in Sioux Falls, South Dakota. Except they thought at first that it was the funeral of Walter Mondale, who is alive.
The group has since changed the wording on their website to reflect that it was McGovern's funeral they were protesting. According to a source on the scene, the group showed up and protested in front of the local Argus Leader newsroom, with the correct signs.
Mondale himself was in attendance at the funeral.