ABC News’ Kathryne Solove Reports:

Today marks the 48 th anniversary of President John F. Kennedy’s assassination.  The 35th U.S. president was was shot as his motorcade rode through downtown Dallas Nov. 22, 1963. 

In the nearly 50 years since Kennedy’s death, the platforms for communication have changed radically — #JFK is now  a trending topic on Twitter. But the passion for  discussion has not.  Countless people took to the Internet today to  relive the events of  that long-ago day and  debate conspiracy theories. 

Although  a 10-month investigation concluded that  Lee Harvey Oswald acted alone in the assassination, many Americans still believe there was a cover-up, a conspiracy. 

The Dallas Police Department held a ceremony today to honor John Brewer, the man credited with leading police to Oswald.  Even though he has received numerous awards throughout the years, he was especially excited about this one. 

 ”This one coming from the police department, the city of Dallas … is really something to me,” Brewer told ABC affiliate WFAA. 

 While managing a small shoe store on Jefferson Boulevard, Brewer heard about  the president’s assassination on the radio.  He heard loud sirens and commotion in the streets. 

 ”As I started to go outside, [Lee Harvey] Oswald walked into the recessed area of my store, where the showcase was on the side, and I thought, ‘This is kind of funny – all [of] this going on and you want to look at shoes,’” said Brewer.

 When Oswald left the store, Brewer followed him.  He followed him into a theater where he alerted employees to call the police. 

 The Texas Theater in Oak Cliff, where Oswald was apprehended, commemorated that infamous day today by re-creating it. 

 According to its website, the theater would be “re-creating that day’s exact minute-to-minute programming at the historic theater, including opening doors at the same time and showing clips from the silent print of “War Is Hell” on a loop with a live soundtrack and a complete screening of “Cry of Battle” starring Van Heflin.”

 The theater even sold tickets for $1, as that was the price nearly 50 years ago.