Previous Rebbe arrested as a child.....

The Previous Lubavitcher Rebbe R' Yosef Yitzchok would earn money for reciting Talmudic passages by heart, with this money, at age 11, he provided interest free loans to the market people.
One day he met one of his regulars, Reb Dovid the butcher, he was carrying a calf on his shoulders, a small lamb in his arms, and a basket of chickens in front of him. "I hope to G-d that I'll earn well today..."he told to the young Yosef Yitzchok. And just then a policeman smacked R Dovid across the face till blood ran down his nose. Seeing this, the young boy yelled, "Drunk! Despicable one!" and he pushed the policeman.
The policeman accused the young boy of ripping his badge off his chest and interfering with his duties and so he had him arrested. Sitting in the dark cell, the young Yosef Yitzchok was pretty frightened. But then started reviewing the words of Torah that he knew by heart.

Suddenly the young boy heard grunting sounds. He lit a match from his pocket and to his utter suprise saw a bound calf with a muzzle on his mouth lying in a corner.
After a couple of hours he was released.

Now, Reb Dovid, was accused of stealing the calf he was carrying. Someone had their calf missing and the police accused R' Dovid of being the thief therefore smacked him.
When they heard that young Y.Y. found a bound and muzzled calf lying in the jail. They investigated, and how amazed they all were to see that indeed .there was the missing slash stolen calf. The policeman himself framed R' Dovid.

"My father said to me" writes Yosef Yitzchok in his diary, "You did well to protect the dignity of an honest Jew. And if for that you suffered for a few hours, so what?"
"Now it has also been demonstrated to you," father continued, "how good it is that you are fluent in mishnayot, talmudic passages by heart. Were it not for this knowledge, in what way were you any better than - l'havdil - the calf who also sat in prison?

Father's words remain engraved on my mind and heart: continues to write Yosef Yitzchok, "Love and esteem every honest Jew, be he rich or poor in Torah. Protect the dignity of every Jew even if danger is involved. And always prepare "provisions for the way" - by learning by heart - in case of any mishap, so that no time will be wasted without study of Torah.

My father gave me ten rubles to add to my fund that I may increase my loan-granting activities."