Former Jay and current Jays analyst Gregg Zaun is quoted in the Toronto Star about the increasingly boorish behavior of Jays fans at Rogers Centre:
Gregg Zaun has also chimed in, suggesting some Jays’ fans are engaging in boorish, obnoxious behaviour that he finds appalling … “It’s very, very prevalent at the Rogers Centre, especially in the later innings when the Jays are losing that people lose their minds … They’re getting drunker, and drunker and drunker and it’s because fans are getting younger and younger,” Zaun said. He added he is most concerned about fans throwing objects onto the field, but he doesn’t even think “profanity should be tolerated at all.”
In the absence of arrest and ejection records this stuff lies in the anecdotal. But as Phillies fans can tell you, even a handful of isolated incidents can cement the reputation of a fan base in a lot of people’s minds.