But later the man said he was a Trump-hater and the final scene reminded him of Trump.
What a loon.
The Washington Examiner reporter:

A disruption at a Baltimore performance of “Fiddler on the Roof” made national news today. A man stood up before the act break of the seminal Jewish musical and shouted, “Heil Hitler, Heil Trump,” holding his arm out in a Nazi salute.

The story ran like wildfire, with national outlets and reporters picking up the Baltimore Sun’s story of the “pro-Nazi and pro-Trump” salute. There’s just one problem: The police report investigating the incident clearly states that the man loathes President Trump.

Unhinged Loon Stands Up and Screams “Heil Hitler! Heil Trump!” at ‘Fiddler on the Roof’ Performance …Turns Out to Be Trump-Hater