A livestream portal linking New York and Dublin reopened Sunday after it was briefly shut down last week amid reports of people flashing body parts, doing drugs on camera and trolling viewers on the other side.

The visual art exhibit dubbed “The Portal” features a pair of installations that each have a giant screen and a video camera, with one placed next to the Flatiron Building in New York and one on O’Connell Street, the Irish capital’s main thoroughfare. Each side of the portal…