UPDATES: Police believe five motorcyle gangs involved in deadly Twin Peaks shootout  —  UPDATE, 7:45 p.m.: Police now believe there were five gangs involved in Sunday's deadly shootout at Twin Peaks in Central Texas Marketplace, and some were allied with one another.

Dean Potter, extreme climber, dies in Yosemite base jumping accident  —  Yet again, Dean Potter was hurtling through the air.  A dead tree stood on the ground below him, a strange tug at the space between his shoulders came from above.  —  Potter, already a famous rock climber, had been having this dream night after night.

The GOP is dying off.  Literally.  —  Lead image by Getty.  —  It turns out that one of the Grand Old Party's biggest—and least discussed—challenges going into 2016 is lying in plain sight, written right into the party's own nickname.  The Republican Party voter is old—and getting older …

ABC Colleague: George Stephanopoulos 'Really Isn't a Journalist'  —  If ABC's chief anchor thought two apologies over his undeclared Clinton Foundation donations would be enough to pacify his critics, he was wrong.  —  It has been a rough weekend for ABC News's embattled chief anchor, George Stephanopoulos, and an even worse Sunday.

The Note: Trouble In Mason City, Feat.  Hillary Clinton and Rick Santorum … NOTABLES  —YOU REALLY OUGHT TO GIVE IOWA A TRY: Broadway this is not.  But if Rick Santorum has anything to do with it, there's going to be trouble today in Mason City, Iowa — the town famous for inspiring “The Music Man.”

Lindsey Graham: June 1 presidential announcement  —  Sen. Lindsey Graham to explore White House run 04:12  —  Washington (CNN)South Carolina Sen. Lindsey Graham said Monday he'll announce his presidential plans June 1 — but seemed to have already made up his mind.

Obama to Limit Military-Style Equipment for Police Forces  —  WASHINGTON — President Obama on Monday will ban the federal provision of some types of military-style equipment to local police departments and sharply restrict the availability of others, administration officials said …

Exclusive Interview: Elian Gonzalez Wants to Come to the US … Elian Gonzalez would like to return to the United States, he tells ABC News in an exclusive interview.  —  “To the American people, first I say thank you for the love they give me,” Gonzalez said.  “I want the time to give my love to American people.”

Shape Of Greek Endgame Emerges: IMF Discussed “Cyprus-Like” Plan After Tsipras Warned Of Looming Default  —  As we said over the weekend, it's all about Riga again for Greece.  EU leaders will meet on Thursday and Friday in Latvia where PM Alexis Tsipras will try to secure a more favorable outcome …

Democrats sic identity politics on their own  —  The left has handicapped its ability to debate policy, even among themselves.  —  They told me if I voted for Mitt Romney, we'd have a condescending president who looked down on his female critics as “little ladies” who didn't understand how the world works.