Because we have our jewish ancestry. Also, please take your substandard low class excreted mentality to not understand diversity nature of India. Infact a person like you having Indian flag itself is a shame which goes against the tolerant and diverse nature of India.
The bottomline is, agar kisi cheez ki akkal nahin ho to poochh lete hain. gober nahin ugalte.
Not being intolerant or anything. But you people just come across as low self esteem a** kissers. Nothing else.
I highly doubt all people putting up that flag have jewish ancestry. Anyway, If I had jewish ancestry i'd still not put any other flag besides India. If you have more allegiance towards Israel, feel free to remove Indian flag.
Okay. back to topic.