By giving strength to the weakest in our midst
I feel the writer used the words 'giving strength' because they used the word 'empower' in the previous sentence. Often we think of weak/weakness as the opposite of strong/strength, so maybe that is why the writer used that word here. I feel however that the word 'weakest' is not an effective word choice.
Many homeless are not weak. They survive in the elements day after day. Many poor are not weak. They work hard to make what little they have. Many immigrants are not weak. They are brave to come to a new land in hopes for a better future. Many refugees survived terrible things in their land before coming here. None of these seem weak to me. I would use the word vulnerable, or marginalized.