a protest rally的用法和样例：
- Hundreds of Maoist supporters staged a protest rally demanding President Ram Baran Yadav's resignation.
- LONDON - A pro-hunting demonstrator is led away after clashing with metropolitan police during a protest rally on Wednesday in the Westminster district of London.
- The people made a protest about the rise in prices.
- There were several encounters during the protest rally.
- The Russian team entered a protest against the tactics of American side.