The two longest down entries in the puzzle are 4D, [Seminal protest song written at a Greenwich Village cafe], which solves to BLOWIN IN THE WIND, and 14D, [Refuse to sully oneself], which is TAKE THE ...
see our series on How to Make a Crossword Puzzle. 78 words for a 15×15 (72 for a themeless); 140 for a 21×21. Maximums may be exceeded slightly at the editor’s discretion, if the theme warrants.