bug in JSON.parse?

I copied a correct JSON string (JSON validators say its correct), but when using JSON.parse it throws an Unexpected token error....

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Je to trend, jeho průkopníkem je u nás společnost <b>Amaso, s.r.o.</b>, kde si vybírají konkrétní kusy dobytka přímo u chovatelů, dohlíží na stravu, zacházení se zvířetem i&nbsp;na porážku. Maso\r\n si tu bourají, a především -&nbsp; <b>nechávají ho odležet a vyzrát</b>. Navíc učí kuchaře z&nbsp;restaurací proměnit odleželé kvalitní maso ve vynikající jídlo. I my si tedy ukážeme, jak se z nejlepšího masa porcují ty nejlepší steaky, jaké druhy steaků existují a jakých 10 zásadních pravidel dodržovat, abychom na talíř připravili perfektní gastronomický zážitek. <br><br><span lang=\"cs\"><b>OHODNOŤTE TENTO POŘAD NA ČSFD <a href=\"http://ift.tt/1APceLT\">ZDE</a></b>.<br><b><br>FACEBOOK POŘADU JÍDLO S.R.O. NAJDETE</b>&nbsp; <a href=\"http://ift.tt/1APceLM\"><b>ZDE</b>.</a><br><font color=\"#666666\"><br><span lang=\"cs\">Účinkovali: Vlasta Lacina Jaroš, Zdeněk Marcín, Roman Vaněk<br>Režie: Martin Krušina<br>Střih: Vláďa Šimek<br>Kamera: Janek Rubeš, Markus Krug<br>Grafický design: Lukáš Veverka<br></span><br><span lang=\"cs\">Dramaturg: Martin Krušina<br>Produkce: Zdenka Weisová, Lucka Dřízhalová<br>Šéfproducent: Lukáš Záhoř<br><br>© 2015 Seznam.cz, a.s.&nbsp;&nbsp; </span></font></span><br>","canonical_url":"http://ift.tt/1DF9M0m","live":false,"_links":{"stream:hit_rss":{"href":"/hit/rss?episode_id=10005186"},"stream:season":{"href":"/season/2722"},"curies":[{"href":"http://ift.tt/1DF9NkU","name":"stream","templated":true}],"self":{"href":"/episode/10005186"},"stream:following_episodes":{"href":"/show/jidlo-s-r-o?direction={direction}&after_episode_order=36&after_episode_season_order=2","templated":true},"stream:hit_subtitles":{"href":"/hit/subtitles?episode_id=10005186"},"stream:recommended":{"href":"/episode/10005186/recommended"},"stream:following_favourites":{"href":"/timeline/favourites?timestamp_from=1426659300&episode_id=10005186"},"stream:hit_view":{"href":"/hit/video_view?episode_id=10005186"},"stream:show":{"href":"/show/jidlo-s-r-o"},"stream:next_playlist":{"href":"/timeline/latest?timestamp_from=1426659300&episode_id=10005186"}},"subtitles_srt":"//im.stream.cz/subtitles/55091a82048474ecd0620000","mregg":[{"zone_id":"streamcz.self.videospot.all","section":"/jidlo-s-r-o","aspect_ratio":1.7777,"skippable_after":5,"collocation":"Web","position":0,"options":""}],"web_site_text":null,"views":196472,"timeline":1426659300,"video_qualities":[{"quality_label":"","formats":[{"quality":"240p","type":"video/mp4","source":"http://ift.tt/1APcg6s"},{"quality":"240p","type":"video/webm","source":"http://ift.tt/1APcgmN"}]},{"quality_label":"Nízká","formats":[{"quality":"360p","type":"video/mp4","source":"http://ift.tt/1DF9M0v"},{"quality":"360p","type":"video/webm","source":"http://ift.tt/1DF9M0x"}]},{"quality_label":"Střední","formats":[{"quality":"480p","type":"video/mp4","source":"http://ift.tt/1APcgDp"},{"quality":"480p","type":"video/webm","source":"http://ift.tt/1DF9Nl2"}]},{"quality_label":"Vysoká","formats":[{"quality":"720p","type":"video/mp4","source":"http://ift.tt/1APcgTK"},{"quality":"720p","type":"video/webm","source":"http://ift.tt/1DF9M0B"}]},{"quality_label":"Full HD","formats":[{"quality":"1080p","type":"video/mp4","source":"http://ift.tt/1APcfiT"},{"quality":"1080p","type":"video/webm","source":"http://ift.tt/1DF9Nl7"}]}],"subtitles":"//im.stream.cz/subtitles-json/55091a82961dec90717d0000","ident":null,"mregg_inject":[{"right":1,"zone_id":"streamcz.self.injektaz","bottom":0.300135,"color":["dark"],"section":"/jidlo-s-r-o","time_from":27,"collocation":"Web","time_to":35,"top":0,"left":0.75}],"name":"Hovězí maso (2) - Stařené maso a steaky","transition_time":null,"mregg_before":true,"published":1426659300,"aspect_ratio":1.778,"mregg_after":true,"order":36}'
JSON.parse(a); // throws an error