The lack of response, indicates at least two things about the wearers:
1. They're incapable of thinking logically for themselves, and that's why they wear "slogans".
They also seem only able to speak in PC cliché learned by rote...
2. They're too cowardly to acknowledge the "challenge" to their shirt's insult -- so can only respond with "this is America" and I can express my opinion, or something similar...
I once bought one of these pimply faced, spiked hair assholes to wide eyed shock and near to tears - by telling him that I once had to kill folks to defend his right to be an asshole....
To be a leftist today, or hold ANY leftist/Marxist/Communist/Progressive up as a hero --- requires one to be uneducated, brainwashed or insane...
Note: Having a degree does NOT guarantee being educated...
Many of the MOST ignorant Leftists, have multiple "degrees".
Unfortunately, none of them have a foundation in reality..
Semper Fi
Amen to every word!