( CNN ) -- Democratic offices in at least three states have reported instances of vandalism that party members say possibly were tied to Sunday 's historic vote on health care reform . Early Monday morning , a glass panel at the Tucson office of U.S. Rep. Gabrielle Giffords , D-Arizona , was shattered , spokesman C.J . Karamargin said . It was n't clear how the window was shattered , but visitors have to go through a gated courtyard to enter the office , and staffers suspect someone may have shot a pellet gun at the glass , he said . Nothing was taken from the congresswoman 's office , Karamargin said . Staffers had stayed late at the office the night before because of the health care vote , but had left before the incident , he added . The office has never experience anything like it since Giffords ' staff occupied the office in January 2007 , Karamargin said , adding that staffers believe the incident was linked to the health care vote in Washington . In upstate New York , two similar incidents were reported before Sunday night 's vote , according to CNN affiliate WHEC . A brick was thrown through the window of the Monroe County Democratic Committee headquarters in Rochester , and another was tossed through a window of Democratic Rep. Louise Slaughter 's office in Niagara Falls early Friday . WHEC reported that a note attached to the brick in the Monroe County office read `` extremism in the defense of liberty is no vice '' -- a quote delivered in an acceptance speech by Republican president candidate Barry Goldwater at the 1964 GOP convention . No one was injured in either incident in New York . Slaughter told WHEC that her offices have recently received threatening phone calls . Speaking on the House floor Sunday , Slaughter referred to damage at her office , saying , `` The anger is n't just contained outside the Capitol . Last week someone hurled a brick through the window of my district office in the dark of night . We must step back to remind ourselves of why we are here . '' The House of Representatives on Sunday passed the sweeping $ 875 billion health care reform bill in a 219-212 vote . All 178 Republicans opposed it , along with 34 Democrats . Both Giffords and Slaughter supported the measure , though authorities investigating the incidents have not officially confirmed the link to the health care vote . Another incident was reported earlier in the weekend by the Sedgwick County Democratic Party in Kansas . Party Executive Director Lyndsey Stauble told CNN that a brick with anti-Obama and anti-health care messages was thrown at the headquarters sometime late Friday or early Saturday . Nothing was taken , and no one was injured , she said , adding that a bakery next door called police . Stauble mentioned that a recent post on a blog encouraged people to throw bricks at local Democratic offices nationwide . The Alabama-based blog , called `` Sipsey Street Irregulars , '' says it has launched a `` window war '' against Democrats and has kept a tally of the recent incidents of damage , including the ones in New York and Kansas . Blogger Michael B. Vanderboegh of Pinson , Alabama , told CNN Monday that in a Friday blog -- which he says was posted after the incident at Slaughter 's office -- he called for people to break windows at Democratic headquarters at the city and county level . He said he did n't call for the damages to congressional offices because , `` I did n't want to be responsible for anybody breaking a federal law . '' However , `` I can understand how someone can be frustrated enough to throw a brick through a congresswoman 's window , '' Vanderboegh said . He said he feels the health care bill is `` unconstitutional and tyrannical . '' `` My answer is violence , by getting their attention , '' he said , adding , `` If we can get across to the other side , that they are within inches of provoking a civil war in this country , then that 's a good thing . ''
NEW : Alabama-based blog calls for `` window war '' against Democrats . Glass panel at Arizona office of U.S. Rep. Gabrielle Giffords shattered early Monday . In upstate New York , two similar incidents also reported before Sunday night 's vote . Comment: