Are there laws to protect care givers from verbal abuse from residents in care homes who are in their right minds?

Please go to your Administrator to discuss this important issue, and to file a report about an apparently abusive elder.

You have to protect yourself.

As in when my dh was in a ccrc, some guy called down to him to send a caregiver for diaper service. He documented that the cg had been called, the cg backed him up, and that was the end of it.

How do you know they're in their "right minds"? You should inform the admins/your employer of the behavior so that if this resident has a PoA or legal guardian they can make a decision about meds for their agitation/aggression. Do you know that dementia isn't a line that is in the sand, where one day a person is in their "right mind" then they step over the line and they then aren't? Dementia happens very gradually over time. My Aunt with very advanced dementia started showing symptoms "here and there" over the span of about 8 years. By time family is seeing frequent/consistent/regular symptomatic behaviors the person is already in moderate -- not mild -- dementia. For some people the progress is more rapid than others. For some people, the symptoms are caused by treatable medical problems, like a UTI. Often, "lying" is due to memory impairment: they can't keep track of what they said or why; and sometimes just denial because they cannot understand what's happening to them. If your superiors don't address this residents behavior then you will need to consider a next-level solution so that you're not driven out of a job.