You are correct, however anytime you confront liberals with facts, they label you as a Fascist, a Nazi, a Homophobe, a Warmonger, or an inbred Bible thumper. Of course there have been time when they just stick their fingers in their ears and start chanting, "LA LA LA LA I CAN'T HEAR YOU LA LA LA LA."
Don't get me wrong, it's always worth trying, just be aware of the possible results. As Alexander Pope once said, "You cannot reason someone out of a position that they did not use reason to get into in the first place.
You need to consider who you are addressing. Many people who appear to be liberal are unaware of the facts, too lazy to think about politics or are traditional Democrats who need to be pulled out of their rut.
The biggest problem I encounter is those who are convinced they are being told the whole truth and nothing but the truth by the MSM.