This is the 13597th most frequent Russian word.
неграждан
"Non-citizens” (individuals without citizenship).
Here, 'неграждане' is used as the subject, denoting people who are not citizens of the mentioned country.
Некоторые неграждане проживают в стране долгие годы.
Some non-citizens have lived in the country for many years.
In this sentence, 'неграждан' is in the genitive case, showing possession or relation to rights.
Вопрос о правах неграждан поднимается довольно часто.
The issue of the rights of non-citizens is raised quite often.
Here, 'негражданам' is in the dative case, indicating the entity affected by the society's attitude.