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The boss of Twitter and Square has actually said that both firms will honour Juneteenth as a company holiday in America.
Jack Dorsey also said Twitter was working to identify which days it made most sense to identify the end of slavery in other nations.
Juneteenth is observed by numerous African-Americans on 19 June every year to mark the emancipation from slavery in the US.
It comes as companies respond to Black Lives Matter demonstrations around the world.
The roots of Juneteenth, which is also known as Flexibility Day and Jubilee Day, go back to 1865, when Union Army General Gordon Granger arrived in Texas to spread news that the American Civil War had actually ended and slavery together with it.
More than 2 years previously President Abraham Lincoln had signed the Emancipation Proclamation to abolish slavery, however the practice co