“Mina al-qawmi al-ẓālimīn”
“From the wrongdoing people.” (al-Muʾminūn 23:28, excerpt)
“Qawm” is a collective noun, singular in form but referring to a community. The masculine rational plural “al-ẓālimīn” agrees with the people who constitute that community, not with the surface singularity of “qawm.”
Translation as “wrongdoing people” may communicate the sense, but syntactic explanation must still address the plural modifier. Arabic collective nouns can invite agreement with their members when context makes those members salient.
The distinction is between grammatical shape and the number of persons denoted.