Catholic education has a troubled history that continues even now - which is: heavy-handed indoctrination of guilt and fear from early childhood education. Guilt/fear indoctrination as a precursor to confession and First Communion is hurtful pedagogy, an ingrained, out-of-sight wound whose true life-long injury is hard to identify and repair.
Faith isn't something acquired by indoctrination, rather, it is acquired in the experience of lived social authenticity and practiced love. Faith is the bridge between individuals and community, which, when built on authentic understandings of childhood experience, on practices and experience of love for one another, becomes second nature.
"walls of exclusion, indifference, racism and intolerance" and i would add guilt and fear, do not need to be "overcome" if bridges have been built from the very beginnings of faith education instead of exclusionary walls of belief/ expectation.