Colin Dwyer

Join me, if you will, on a brief trip down memory lane — back to Wednesday, when authorities told residents of a small Colorado town that their tap water had been laced with THC. At the time, the Lincoln County Sheriff's Office said that multiple tests of a local well had turned up "presumptive positive" for the compound, best known as the mind-altering component in marijuana.

Editor's note: This is an excerpt from the latest episode of the Invisibilia podcast and program, which is broadcast on participating public radio stations.

Walking among the California redwoods, drifting blank-brained on a break from college, I got to thinking about shoes. I can't say why, exactly. Perhaps it was because they were touching my feet.

Less than 24 hours after a truck sped down more than a mile of a beachside promenade in Nice, France, claiming the lives of at least 84 people and wounding many others, details are beginning to surface about the victims of the attack.

All five of those killed Thursday night at the Dallas protest were law enforcement officers — four of whom served with the Dallas Police Department, while a fifth worked for Dallas Area Rapid Transit, or DART. That DART officer has been identified by the department as Brent Thompson.

A planned white nationalist rally unraveled into violence in Sacramento, as counter-demonstrators clashed with the gathering just outside the California Capitol. At least 10 victims have been hospitalized with what the Sacramento Fire Department characterized as "critical trauma stab wounds."

Officials say many others suffered minor cuts, scrapes and bruises.

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