A presidential visit to game three of the NBA Finals has locked down a big chunk of Manhattan, and it's bad news for fans, local businesses, and the city's mood.

• Trump is the first sitting president to attend an NBA Finals game, sitting in a suite at Madison Square Garden.
• A four-block area around the arena is fenced off, with no walking or driving and TSA-style checks for fans.
• Outdoor watch parties are cancelled, so people who can't afford tickets are shut out.
• Bars near the arena lose what could have been their biggest night of the year.
• Critics say the visit may be tied to an $8 billion deal — the Trump administration had final say over a plan to demolish and relocate the arena, which sits atop Penn Station.

Outlook: Expect more friction between Trump and big cities, with courts already striking down some of his moves, like the $100,000 visa fee and his name on the Kennedy Center.