Senator Menendez (D-NJ) has apparently been enjoying the company of prostitutes.
Here's a time sensitive case for which you can prove a liberal media bias.
Find articles on this story on liberal friendly websites.
Do any of the following have an article on this story (at the time of my writing this):
NBC - couldn't find one
CNN - nope
CBS - here
Huffington Post - here
Slate - nope
Politico - here
All of them seem to like stories about gun control. Each of those has many articles on gun control, and maybe one on Sen. Menendez.