A couple examples:
Reassuring congregants that the discipleship resource, retreat, or event is *only* such and such and is a *small* cost for growth.
Shaming families who don't observe a sabbath rest, even though one or both parents may have to work on Sundays just to survive.
Assuming that families can just trim their budgets of superfluous wants when they can barely afford to buy secondhand clothing for their children.
Condemn public school education when families can't afford private schools or the parent(s) is/are hard at work making ends meet that they can't homeschool.
Put down youth ministry when families need it to supplement their family ministry because the caregivers don't have enough time in the week because of long hours.
Talking fatalistically about Providence, as though one's current situation is their lot in life that they should be grateful for.
Making people feel bad for not tithing and claiming that they're not trusting God when they're using the money to feed their children instead.
Talking about entitlement and welfare in the same breath to make a sermon illustration.
Shaming people for being in huge amounts of college loan debt when they were the first to go to college in their families.