Who passed away on 10 Av, and when and why did the Rebbe 'mark' this yahrzeit?

Can some tzadikim be too perfect? What's the perfect amount of imperfect?

What is the 'Shaul vs. Dovid' model for failed leadership vs. successful leadership?

This discussion encompasses these questions, the history and background of the Yolles rabbinical dynasty via Sambor, Stryi and Philadelphia, the halachic question of including pictures on gravestones, and quite a bit more.

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SOURCES

1952 letter to Rabbi E.E. Yolles: https://www.chabad.org/therebbe/article_cdo/aid/4812804/jewish/page.htm

1955 letter to Rabbi E.E. Yolles: https://www.chabad.org/therebbe/article_cdo/aid/4929180/jewish/page.htm

1964 sicha on Shaul & Dovid: https://www.chabad.org/therebbe/article_cdo/aid/4304506/jewish/page.htm#5

Round-up of clippings relating to Rabbi Shalom Yolles of Stryi: https://rsdhomnick.substack.com/p/100-years-passing-rabbi-shalom-yolles