You freedom of speech has not changed.
But society has changed, and crass, insensitive, bigoted, racist, and sexist speech is more frowned upon.
In the 1970s you could see a blackman and throw a banana at him, and all your mates would laugh. But that was not nice behaviour, and thankfully that kind of stuff is now deemed unacceptable, and anyone doing it would be rightly castigated.
You should probably try to move with the times and accept that changes in morals and politeness are fluid and ever changing.