Execs believe they are clever by using widespread layoffs to provide cover for laying those off they deem "undesirable" in protected classes.
They also can try to get rid of entire teams or efforts to hide it. It's not hard. Move "undesirables" into end of life product areas and/or not allow those people to move out of those areas into viable programs. Perhaps throw in a few "less great" performance evaluations that defy the actual reality.
There are many other tricks that can be used.
And they work. Mostly. Usually.
Unless the come under very close scrutiny.
and know this and take heart, we are now watching. Closely.