George Zimmerman, the man who shot and killed Trayvon Martin, has waived his right to a speedy trial on Tuesday, the [Orlando Sentinel reports.](http://articles.orlandosentinel.com/2012-05-08/news/os-george-zimmerman-arraignment-motions-20120508_1_speedy-trial-motions-arraignment-today) Experts believe lawyers are prolonging court proceedings in hopes the controversy fades away from national headlines. Zimmerman, 28, admits he shot Martin, but still claims he did so in self-defense. He pleaded not guilty in court documents, making his appearance unnecessary at Tuesday’s arraignment hearing. In Florida, a defendant is entitled a trial within 175 days of being charged, but Zimmerman’s attorney Mark O’Mara told [ABC News](http://abcnews.go.com/US/george-zimmerman-pleads-guilty-trayvon-martin-murder-charges/story?id=16304854#.T6mJ9J9Yt91) he would try to prolong the process to allow racial tensions and the emotion associated with the case to subside.