• Hillary Clinton poses with Pussy Riot

A brick wall on the side of Donald Trump's campaign office in Denver was vandalized late Thursday or early Friday by a perpetrator or perpetrators who wrote foul language and called the Republican presidential nominee a "thief" and "pervert" in big, block letters. The building's windows were also defaced.

Sonny Jackson, Denver police spokesman, said a call was made at 7:20 a.m. about anti-Trump graffiti.

"It's an anti message. We'll investigate it using all the tools we have at our disposal including viewing (footage from security cameras) to determine who did this," Jackson said.

Later, at about 9 p.m. Friday, Trump staffers reported a rock tossed through a window of the same headquarters. Television footage from the scene showed a hole slightly bigger than a softball in the window.

This isn't Denver's first case of political graffiti this election season. Earlier this year, a mural portraying Democrat Bernie Sanders in the city's Five Points neighborhood was marked with the words "loser," "sellout" and "traitor" after he endorsed Hillary Clinton.

The Trump campaign had no comment.

Later in the day, at a campaign event in Denver, former President Bill Clinton addressed the vitriol in the presidential race, asking Hillary Clinton supporters to take the high road with Trump supporters.

"What I want you to do is not to treat them the way they have treated Hillary," Bill Clinton said.

• Dying of thirst: Privatization of water as an owned commodity rather than a Universal Human Right

Due to global warming, widespread drought and increasingly polluted water systems, the projected availability of clean freshwater in years to come to meet the rising demands of a growing global population is among the most daunting human challenges of this century. By 2015 a 17% increase in global water demand is projected just for increasing agriculturally produced food. By the same year 2025, the growing global population will increase water consumption needs by a whopping 40%. While oil played the keenly critical role during the twentieth century, water is being deemed the most valued precious natural resource of the twenty-first century.

As such, several years ago the United Nations declared access to clean drinking water a universal human right. Conversely, willfully denying it is considered a serious human rights violation that denies life itself. And any calculated decision denying people their universal right to life is nothing short of a murderous, shameful crime against humanity.