The waiting crowd turned into a charging mob.

a charging mob --- a noisy crowd who are ready to fight

mob: n.

1) a large noisy crowd, especially one that is angry and violent

a mob of a few hundred demonstrators

They were immediately surrounded by the mob.

2) [informal] a group of people of the same type

[synonym] gang

mob of

The usual mob of teenagers were standing on the corner.

charge : to attack violently

The troops charged the enemy line.

the wounded lion suddenly charged at me.

1) mob n.

a disorderly crowd of people

暴徒，民众

e.g.: An angry mob is attacking the palace 愤怒的群众在袭击王宫。

(used as attributive) mob law/rule –暴民的法律/统治

mob violence暴乱

2) charge

v. = attack

charge sb. money for sth. ---- They charged me 80 yuan for a room one night.

charge sb. with + 罪行： 控告某人，指控某人

(be charged with robbery)

in charge of / take charge of

负责，主管