I'm sorry but I think the time of ignorance being an acceptable excuse for putting something stupid on social media has long since passed.
These guys are public figures and are paid very well for it. They choose to have social media accounts for whatever personal or financial reasons, and as such, have chosen to be responsible for their actions on such a public medium.
Barely a week goes by without a twitter shit storm and as a public figure, especially one who draws a large percentage of his income from commercial sponsorship, the onus is on him to ensure he doesn't compromise himself.
I don't for a second believe that in this day and age, his club and management team haven't discussed appropriate use of social media. There really aren't that many things to focus on - it's not that hard to tweet while keeping a wide berth of racism, sexism, religion and politics.
I also don't for a second believe that in 2017, whether they've ever heard the term blackface or not, anybody paints their face black without pausing to wonder if there's a chance it will cause offence.
Only last year in Madrid, where Griezmann lives and plays, there was a huge controversy surrounding the tradition of blackface painting in the Three Kings Parade.
He chooses to use social media because it raises his profile and benefits him commercially. He chose to paint his face black at best, because he didn't bother to spend 10 seconds checking if it was suitable to do so and at worse because he knew it wasn't but didn't give a shit.
He is 100% responsible for any and all fallout from this. Anyone defending him should give their heads a wobble.
I've spent the last few years criticising twitter shitstorms and defending people at the centre of them but not any more. If you're famous and you get caught out at this stage you're at best an idiot and at worst actually fully deserving of the accusations.