Mass Killings Bring New Demands for Gun Control in America

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focus – n. the subject on which people's attention is placed

background check – n. a formal look to see if someone has something in his or her past that would make them a risk

law-abiding – adj. obeying laws

ploy -- n. a clever trick or plan that is used to get someone to do something or to gain an advantage over someone

screen – v. to check people for dangerous items such as guns