Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].

On Friday  Sen. Dianne Feinstein (D-CA) said she will introduce legislation that would raise the minimum age requirements for purchasing a rifle from a gun dealer.
 Feinstein 's declaration comes after 17 people were killed Marjory Stoneman Douglas High School in Parkland  Florida on Wednesday.
 Feinstein 's proposal received a mixed reaction.
I plan to introduce a bill to require ALL firearms purchases from gun dealers be restricted to individuals who are at least 21 years old. If you can’t buy a handgun or a bottle of beer  you shouldn’t be able to buy an AR-15. — Sen Dianne Feinstein (@SenFeinstein) February 17  2018
Sen. Feinstein Will Introduce Legislation to Change Minimum Age Requirements for Gun Purchases