Exactly, its changed slowly but surely so you wont know the wiser

Put a frog in a boiling pot hell jump out
Put a frog in a pot and slowly boil, hell die

Same goes for american societies, subtle changes arent noticed by the whole and the people that DO notice them are either A.) Disregarded because they are going agaisnt the flow of the mainstream or B.) Wont voice their opinions in fear of persicution/riddicule