Rav Shternbuch has a teshuvah in Teshuvos V’Hanhagos the other way around. A grown child who was chozer b’teshuvah and married and had a family asked the following question:
When they take their kids to visit their non-religious grandparents, the grandchildren watch TV (which the frum parents don’t approve of). The sheilah was can/should they break the TV so the kids can’t watch it?
Rav Shternbuch answers that you can’t break other people’s property, even though TV is a very bad thing. He suggests talking to the grandparents and asking them to make some accommodation.