KABUL, Afghanistan — Sardar Ahmad, a warmly admired stalwart of the Afghan journalistic community here, loved to post bits of wisdom from his young daughter, Nelofar, on Facebook. “Baba, do the Taliban kill animals as well?” began one exchange. “No!” he replied. “I wish we were animals,” Nelofar declared. In a horrifying turn of fate that has devastated his peers and colleagues, Ahmad and his family became the Taliban’s quarry last week. He, his wife, Humaira, and two of their children — Omar, 5, and Nelofar, who had just turned 6 — were among nine people killed by militant gunmen at the Serena Hotel on March 20. Their 2-year-old son, Abu Zar, is the family’s sole survivor, critically wounded after being shot three times, including in the head.