. >> cheryl: take you to very colorful san francisco celebration, but there is serious message behin >> dan: coming up a the 6:00. san mateo homeowner gets a reprieve. why they didn't decide to bulldoze this nuisance. >> a printed they're prints in three dimensions, we'll show you how it works. >> dan: it's all coming up at 6:00. >> cheryl: right now april fool's day is time to get a little silly. they light to get downright stupid. >> dan: they willing took part in the 35th annual stupid parade. >> cheryl: they were monkeys and crazy dancers. >> dan: they were more than dancing around. they took a pledge to fund the first church of the last laugh. they organized the event to organized religion they say. >> cheryl: they were having a good time. >> dan: for >>> this is "world news." tonight, on guard. prosecutors under armed guard in texas after a district attorney and his wife are gunned down with an assault weapon in their home. >> this whole thing is shocking to all of us. >> is there a new group targeting law enforcement? tonight clues in the growing mystery. >>> courage under fir

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firsthan >> we stopped for a second to to kind of collect ourselves andesn heard the bomb and looked behine us and there was a second one oe and we knew there was a bomb. bb you need to run, everybody started running as much as they could. >> where the bomb hit they were 10 and 15 deep. de they were families and fans fans cheering you right near the lines. it was deafening loud.. they were cheering like it was s their job, and unfortunately, they're the people that gott injured so badly. >> we couldn't see the patients in the back of the fanner vanfan but whavan but wecould see the e of the driver. >> most the injuries deal with h the body.. threes been signs of solidarityr and beyond.d beyond. the brooklyn academy of music offered this message, darkness cannot draw out darkness, onlyry light can do that. that. the yankees and the red sox had a melding of their emblems to show solidarity between new york and boston. after niven-less than, yo 9/11,w firsthand what the bostonnians are going through today. to it's food to see the sports spos world coming together.rld coming >> it sure is. is.