Remember the two American bicyclists killed in an attack in Tajikistan who were a couple from Washington, D.C., who quit their jobs to bike around the globe.
The couple, Jay Austin and Lauren Geoghegan, both 29, had been on the road for just over a year.
On their blog, they described the kindness and generosity of strangers around the world as they biked through Africa, Europe and central Asia.
There were hard days, setbacks and acts of cruelty, too — strangers who tried to run them off the road, or push them off their bikes.
Austin - "Badness exists, sure, but even that's quite rare. By and large, humans are kind. Self-interested sometimes, myopic sometimes, but kind. Generous and wonderful and kind. No greater revelation has come from our journey than this."
The Islamic State has claimed responsibility for the brutal attack that ended their lives, as well as the lives of two other foreign bicyclists. A car swerved to hit a group of seven bicyclists; assailants then jumped from the car and stabbed the bikers with knives.
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I feel sorry for their families.