Last Week Tonight's John Oliver weighed in on data brokers, showing how easy it was to target members of Congress with ads after obtaining their personal info (Andi Ortiz/The Wrap)

Andi Ortiz / The Wrap:
Last Week Tonight's John Oliver weighed in on data brokers, showing how easy it was to target members of Congress with ads after obtaining their personal info  —  John Oliver escalated his typical shenanigans on Sunday night's episode of “Last Week Tonight,” going from poking fun at politicians to outright blackmailing them.