As I understand it: a subset of the students dug the tunnel so they could sneak into the temple when Democrats were being totalitarian assholes during COVID. The owners/managers of the temple found out, didn't like their temple being literally undermined and asked for it to be filled in. Apparently those students wanted to expand the temple and saw the tunnel as a means towards that end, but I'd also imagine that the students were angry that the same police who were enforcing the Democrats' lockdown had now shown up to fill in the tunnel they'd been using to bypass the Democrats' lockdown.