It may be the case that many meetings may try to restrict comment to only items on the agenda or to forbid comments about elected people even if they are true. Check your local Sunshine Laws and use those laws to the fullest extent permitted. (We don’t need to be unlawful, since that undermines our case.)
That said, there are relevant ways to make public comment germane to the business or whatever meeting you’re at. (Kudos to @early80 on Reddit for inspiring this.)
For school boards: how are they protecting students who could potentially be targeted by the federal government’s policies, have they evaluated what the dismantling of Dept of Education would mean for them, what will happen if they remove Title 1 funding, how will they continue to support children with IEPs etc.?
For local government: do they have ordinances to protect people at risk of being targeted, do they have a human relations commission and anti-discrimination ordinances, how will they make up any budget shortfalls if federal funding disappears, etc.?
The changes being pursued at the Federal level will ripple down through the entire nation, even if there is no state action, or despite that action.
Whole industries, like higher education, are being targeted, and the impact of any one business or non-profit could have significant impact on the local economy, the families, students, etc., in that community.
For more general questions on what to ask local governmental bodies, check out this post.