If he did in fact cry, which I doubt, it was only because he realized no one was going into the capitol without the FBI's assistance and once they did go inside, they stayed within the velvet ropes and admired the artwork like one would do at a museum.

I think these creeps truly believed Trump supporters would burn the place to the ground and once they didn't, Ryan realized he was foiled once again. Thats the only reason I can think of him legitimately crying for.