This is why some of us can’t have nice things.

Surprising absolutely no one, the voyeuristic new “Portal” street exhibit in the Flatiron District connecting New York City and Dublin with a 24/7 live video feed has already caused chaos — with mischief-makers on Ireland’s side flashing everything from their bare bums to swastikas and a photo of the Twin Towers in flames on 9/11.

Part interactive sculpture and part webcam, the 3.5-ton portal was installed May 8 at the busy Manhattan junction of Broadway, Fifth Avenue and 23rd Street. It opened in tandem with its sister Portal in Dublin, positioned facing the city’s bustling O’Connell Street.