Yes, for a time they were banned. Even after they were allowed, they were frowned upon (force of habit). But we young people were the ones who, little by little, recovered and adopted all those foreign traditions and festivities.
Today, the government continues trying to "restrict" some of them, like Halloween. Officially, you can't say we celebrate it. We do it anyway, since it's almost impossible to ban it these days. But you'll never see anything from the government mentioning Halloween, for example.
But, as I said, what matters is celebrating, and that's what we do.