We're blessed with freedom of speech in this country, but there are some lines that shouldn't be crossed. Comedienne Kathy Griffin crossed that line when she did a skit holding a bloody head of President Donald Trump. The backlash has led to an apology but unfortunately this case isn't isolated. The Univ. of Alaska Prof displayed a painting of Capt. America with Trump's severed head. And a Fresno State history professor tweeted that "Trump must hang." Projecting images of violence and verbal assaults against the president are simply wrong. Violent messages are one step from an actual violent act. And we as Americans should stand against such threats because they foster hatred and poison our community. Instead, people of all political stripes should embrace public virtues of civility, decency and respect.