Kya Article 21 ki Pehchan hai Judiciary ki Power?

Maine suna hai ki SC ne Shatrughan Chauhan ka case 2011 mein decide kiya tha, jahan judiciary ki power ko Article 21 se juda ya tha. Magar fir kya hai yeh - kahaan hum Article 21 ko limit nahi kar sakte, kahaan judiciary ko free hand milta hai? Kya ismein Article 14 ka conflict nahi hai? Maine socha hai ki Article 21 ka basic structure test aane se pehle hi judiciary ka role thoda clarify ho jata hai. Lekin kya yeh sach hai? Kya judiciary kisi bhi case mein Article 21 ka use karke state ki koi bhi policy ko dismiss kar sakti hai? Main khud bhi confused hoon. Kuch examples milte hain to yeh clear hoga.