In forrest gump how would war protestors back home use this issue to make their case against this war

. Gump gets swept into an anti-war protest criticizing America's involvement in the Vietnam War.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.