Okay, so, this particular news report unfortunately doesn't specify whether the "child workers" in question had been enslaved in the Ivory Coast; however, the documentary "Slavery: A Global Investigation" makes it clear that circa 2000, Abdoulaye Macko was an anti-slavery activist involved in efforts to free enslaved children.
Anyway, here's the news report this meme is based on. The news report was published on 27 March, 2000,
"Some 50 Malian children who had been working on plantations in neighbouring Cote d’Ivoire were repatriated on Friday, AFP reported quoting official sources in Mali. The information was released during a day dedicated specially to Malian child workers, in which delegates from Burkina Faso, Cote d’Ivoire and Mali participated. AFP quoted the Malian consul in the Ivorian town of Bouake (290 km north of Abidjan) as saying that over 100 Ivorian plantations employed child labour. The consul, Abdoulaye Macko, said more children would be returned home as soon as money was available."
"Fifty Malian child labourers repatriated"
https://www.thenewhumanitarian.org/report/13193/mali-fifty-malian-child-labourers-repatriated
For more background information about this meme, please see:
https://www.reddit.com/r/AntiSlaveryMemes/comments/1246bok/thanks_in_large_part_to_the_work_of_malian_consul/