How to deal with a foreign husband who is insensitive

My husband is a foreigner and he is quite insensitive when it comes to my cultural beliefs and practices. For instance, whenever I talk to our kid about my cultural beliefs, my husband would dismiss me and tell me to stop brainwashing the kid. Iím only trying to tell my kid how their momís cultural roots work. My husband was not this insensitive before. It only started recently when our kid started asking me about my religious beliefs. How do I call my husband out on this? I really want to talk to him but I have no idea how to open up. Need advice.