Complex sentence: It is noted that the poorest areas would obviously have been most badly affected, but the incident raised questions regarding why African-Americans are so heavily prevalent in the poorest areas and having lower-graded jobs of poorer pay.
Split into simpler sentences: It is noted that the poorest areas would obviously have been most badly affected. The incident also raised questions regarding why African-Americans are so heavily prevalent in the poorest areas and having lower-graded jobs of poorer pay.