In the episode of 'The Mentalist' entitled "Red Is The New Black", there young designers were arrested at an "Occupy Oakland" rally and spent the night in jail. In a way, this was a good thing, because it eliminated the trio as suspects in the murder of another fashion designer.
On January 28th of this year, 400 protesters were arrested at the "Occupy Oakland" protest, so now we know when this episode took place. (It aired on February 2nd, so that was a quick connection for the Toobworld timeline!)
Others may have been arrested in the past few months, but a number as large as that makes it easier to blend in a few fictional TV characters. Precedent for that has been established by larger historical events like Custer's Last Stand, Pearl Harbor, D-Day, the sinking of the Titanic, and the World Trade Center Attack.
(My thanks to Rich Shapiro for pointing out the significance of their alibi.)