The blood stains on Vanessa's face and dress change places from when they are in the apartment to when they are being escorted to the police cars.
When Fisk attacks Dex, there is blood on his face and suit that was not there before.
Matt is shown wearing the same green parka that he leaves at gym. Because he didn't go back to the gym, he shouldn't be wearing it.
A Cardinal is seen presiding over the wedding, despite neither Wilson Fisk nor Vanessa having been seen to be Catholic. There is no reason why their religion would have been seen, especially if they do not attend church regularly, which is true of many people who identify as Catholic.
During the dance at Mr. and Mrs. Wilson Fisk's wedding before the video of Nadeem spreads, one attendee can be seen with an iPhone camera out, however he isn't actually filming anything and his recording is off.
Despite being able to track cellphones to their exact location, neither Kingpin nor the FBI use this technology to locate Daredevil, Foggy, or Karen.
SAC Hattley was shot; she should have been taken out on a stretcher.