It’s a social welfare program like any other. So if politicians are “stealing” social security money, it’s not yours, it’s the beneficiaries. Similar to if they were stealing food stamps.
Like all social welfare programs it can be amended, changed, done away with, etc and it’s not “taking your money”. That money was gone when the taxes were paid.
If you want social security to be an existent and viable social welfare program when it’s time for you to receive it, vote for parties and politicians working to make that happen and punish those that don’t.
Or conversely if you don’t want that welfare program to exist vote that way.
But don’t treat social security as some bank account you’ve paid into, it’s not that.