take sth lying down	accept sth unpleasant without complaint
hot air	false promise
dig one's heels in	show firmness over sth
take the law into one's own hands	do sth to combat injustice without abiding by the rules of law
seal somebody's/sth's fate	ensure the death/failure of sth/sb
stick to one's guns	keep supporting a particular belief
sit on the fence	refuse to have opinion or take sides on an issue
up in arms	angry because one is opposed to sth
vote with one's feet	show one's opinion by not participating in sth
do the trick	achieve what is wanted
running battle	long-lasting struggle
easier said than done	sth which sounds easy but is difficult to achieve
fall on deaf ears	be ignored
the grass roots	ordinary people not in authority but whose opinions are important
behind closed doors	secretly
call it a day	stop doing sth
cut no ice	fall to impress
the law of the jungle	the strongest wins
chapter and verse	in full detail
sit in judgement	decide if sth is bad or good