The pensions that are so underfunded (either due to corruption or bad math) they need repeated bailouts from federal taxpayers? Hope you’re in a sufficiently politically influential union.
If federal taxpayers are going to bail out old people, might as well be the whole stock market so it’s not just a few politically influential unions that get bailed out.
Union members not in an insufficiently influential union can have their benefits cut:
The stock market is rigged in favor of corporations and wealth.