Why Are There No Reactions To The Plight Of Africans Enslaved In The Arab Countries?

The international community and some African leaders would flock to send aid and contribute to solving any ill that befalls the west, but would most often turn their back to the plight of Africans.
Is it that the cry of Africans isn’t loud enough or that the international community assumes our issues ain’t real?
How can this be happening? Though there are videos as evidence to show and there is no outcry from the world and no swift reaction from the Arab country’s government where this enslavements are happening, what a shame.
See video below: