1960s cultural revolution ... Or a hint to answering the starred clues: 17-A17A*Concise business spiel[---------], 29-A29A*Big bloviator[---------], 44-A44A*Attractive companion[---------] and 60-A60A*Pipsqueak[---------]
41A
Hold a grudge
42A
Brewer's kiln
43A
Wacko
44A
*Attractive companion
46A
Broadcasts
47A
Every now and ____
48A
Over yonder
51A
Suzette starter
55A
Sources of underwater suction
59A
Nearby 62-Across62ABallplayer "in the Outfield"[-----] competitor
60A
*Pipsqueak
62A
Ballplayer "in the Outfield"
63A
Elivs' gold suit material
64A
Has a bug, maybe
65A
Smartwatch tally
66A
Best Female Tennis Player, e.g.
67A
Candy made by Hershey's in the US and Nestlé everywhere else
Down
1D
Artist who warps time?
2D
Craigslist caveat
3D
Adjust one's A.P.R.
4D
Figure drawing?
5D
Put on a coat, maybe
6D
C.P.R. pro
7D
Bushel partner
8D
Urge
9D
Meal that's often grabbed
10D
Pens made by Mitsubishi
11D
Smudge stick herb
12D
50-Down50DFrequently torn tissue, for short[---] spot