take up the cudgel(s) on behalf of (someone or something)

take up the cudgel(s) on behalf of (someone or something)

To defend, show strong support for, or argue on behalf of someone or something. The phrase can also be worded as "take up cudgels for (someone or something)." People from across the country are taking up cudgels on behalf of the young man being held by police. He's got plenty of money to hire a proper legal team. I don't think he needs the likes of us taking up the cudgel on his behalf.
See also: behalf, of, on, take, up
Farlex Dictionary of Idioms.
See also:
  • take up the cudgel(s) for (someone or something)
  • take up the cudgels for somebody/something
  • from my cold, dead hands
  • (as) sure as eggs (is eggs)
  • great minds
  • great minds think alike
  • all for one, and one for all
  • a penny for them
  • eggs is eggs