Attributing the violent attacks on migrant workers in Gujarat to frustration among unemployed youth, Congress President Rahul Gandhi on Tuesday said the migrant workforce is "critical" for economic growth and must be curbed immediately.

"Across Gujarat, poor economic policies, demonetisation and poorly executed GST (Goods and Services Tax) have devastated industry resulting in the shutting down of factories and industrial units, leading to massive unemployment," the Congress chief said in a Facebook post.