@wayoutthere In sociology racialization/ethnicization is ascribing ethnic or racial identities to a relationship, social practice, or group that did not identify itself as such.
You will find lots of groups of people who aren't happy about being categorized then defended or attacked by people who are 'speaking for them'.
The obvious current example is the overwhelmingly white US #BLM movement. If you go to a California black neighborhood and talk to people they are v suspicious of BLM's motives. Another new one is the latest acronym #AANHPI (Asian American Native Hawaiian Pacific Islander).
I don't enjoy being categorized, pigeon holed and criticized like any other sane person but we appear to be in the midst of a mania for people speaking on behalf of others to push their own agendas.
I heard Tulsi Gabbard (an'#AANHPI POC') use the term racialization of everything recently and think she is sensible and spot on with her one love messaging and pointing out the endless divisions currently being created in societies.
Regarding slavery, I'm sure you're aware there are more slaves in Africa now than there were in the brief era when european and US maritime merchants bought slaves off slavers along with other 'products'? The current specious rewriting of history to imply slavery was invented by colonial white people is so far off base it is a huge danger to society and ignores today's realities. It is also a powerful tool for feeding racialization paranoias.