I would love to hear classical music playing but it can't be too loud as there are residences nearby.
If you want to keep sketchy douche bags out of Cawthra Park, rig the park with speakers and play classical music, opera etc 24 - 7. This works at
Warden, Victoria Park, Main Street, Bathurst, Dundas West, Runnymede, Finch and Greenwood subway stations. Play Mozart, Bach, Sibelius, Verdi and douche bags flee.