I must admit I personally didn't hear the Democrats hissing at the State of the Union address -- but then again, I wasn't there "live" and only saw what the news services wanted me to see.
According to Ted Cruz -- Democrats began hissing when President Trump mentioned all the people who were able to get off wwldaee because they were now gainfully employed.
If they did -- why?
Why would they hate the fact that people have become able to provide for themselves? That's crazy!