Though you are entitled to create any art you wish, I disagree with the picture you created of Dr. Martin Luther King wearing a hoodie.
Dr. Martin Luther King is a respectable and influential figure in this society and by his past actions it is hard to believe he would wear or do something such as that.
In this subject it is apparent you have offended his family and possibly encourage others to create offending pictures such as that.
Though you have every right to disregard this message you should know many people view what you have created as disrespectful and disgusting.
For future knowledge please be respectful of influential figures.