News Zac Efron Slammed on Social Media For 'MLK Day' Message, Not Appearing at 'HSM' Reunion By Zach Seemayer 11:11 PM PST, January 18, 2016 This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. 48:03Zac Efron Under Fire on Social Media For MLK Day Post, Missing '…01:33Gabrielle Union Shares 'Bring It On' Sequel Update at Hollywood …03:27'The Talk's Sheryl Underwood on Her 90-Lb. Weight-Loss and Seaso…03:00Leonardo DiCaprio 'Spending Time' With Gigi Hadid Following Cami…05:01Tim Allen on Bringing Back 'The Santa Clause' and Daughter Joini…02:02'The Mandalorian's Amy Sedaris Reacts to Fan Love for Her Charac…10:38Emmys 2022: All the Must-See Moments03:49Wendy Williams Enters Wellness Facility to Treat ‘Overall Health…02:00Naomi Watts Reacts to Bestie Nicole Kidman’s Viral AMC Intro (Ex…01:50Behind the Scenes of the 'NCIS' and 'NCIS: Hawaii' Crossover (Ex…01:21Why George Clooney’s Movie ‘Ticket to Paradise’ Moved UK Premier…01:22Elton John and Harry Styles Pay Tribute to Queen Elizabeth Durin…09:05King Charles Delivers First Speech After Queen Elizabeth's Death01:58Ellen Pompeo and Patrick Dempsey Reunite at D23 Legends Awards01:00Julia Louis-Dreyfus Reacts to Son Charlie's Acting Career and Te…02:10Beyoncé’s Star-Studded 41st Birthday Party: Kim Kardashian, Drak…02:43Elisabeth Moss Explains Alexis Bledel’s ‘Handmaid’s Tale’ Exit (…02:03Emmys 2022: Amanda Seyfried Feels Like a Knight in Her Armored A…04:37Sheryl Lee Ralph on Hollywood Legacy & History-Making Emmy Love … Zac Efron is having a rough week on social media. The Dirty Grandpa star is catching flack on Twitter and Instagram for posting what some feel was an insensitive message in celebration of Martin Luther King Jr. Day. "I'm grateful for a couple things today: Martin Luther King Jr & 10 million followers on IG," the 28-year-old actor shared on Monday.I'm grateful for a couple things today: Martin Luther King Jr & 10 million followers on IG ☝?✊?#MLKDaypic.twitter.com/R373JoVspQ — Zac Efron (@ZacEfron) January 19, 2016NEWS: Madonna Draws Criticism for Instagram Photos of MLK and MandelaResponses to Efron's tweet were not as supportive of his Instagram milestone.PHOTOS: Star Shots: What's On Instagram?As much hate as Efron got for his MLK Day post, that criticism paled in comparison to the negative feedback he’s receiving for not making it to the upcoming High School Musical 10th anniversary reunion, airing Wednesday.According to Efron, the reunion conflicted with his schedule of promoting his upcoming film, Dirty Grandpa. However, he did prerecord a message for his fans. WATCH: Zac Efron Struggles to Remember the Name of a 'High School Musical' TuneIt seems that this wasn't enough for many HSM fans, who were incensed that he didn't make time for the reunion.@ZacEfron COACH SAID TO FAKE RIGHT AND BREAK LEFT INTO THE REUNION— Karla Alexandra (@karlylemonroe) January 19, 2016All told, it looks like most of his followers have one strong message for Efron: "Get'cha head in the game, Troy!" WATCH: Ashley Tisdale Opens Up About 'High School Musical' Reunion: 'We All Still Love Each Other'EXCLUSIVE: Ashley Tisdale Dishes On 'High School Musical' Reunion and Having Kids This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. Related GalleryStar Shots: What's On Instagram and Snapchat?