. >> for it was written longin lo. accept the lord, keep the city.he watch manwakeeth buman wake. >> 14,000 applied to be here today, but only 5,000 were chosen. you saw how they turned out despite this cold weather paws this day is so engrained in the history of dallas they felt it was that important to remember it. >> heidi, a remarkable speech from the mayor of dallas today as well as david mccullough. this is an important day for the city of dallas it seems. tell us how you reacted to what you saw. >> sure. 50 years ago dallas got the u unforfeit city of hate. but it held a dignified, a solemn ceremony here and infact notably the city has made an effort to erase any sort of voyeurism of murder as the words of the mayor. they pulled up the two xes painted on the asphalt as a show of respect today. >> heidi, thank you very much. >> the second victim j.d. tippet, who stopped oswald for questioning. >> you can see behind me, maria tippett, accepting hugs, from other officers, speaking how she asked j.d. to a church function and six months later they