Bearish sentiment is reaching extremes in some areas of the market. Is it time to be contrarian?

Sentiment on StockTwits is often telling.  Currently traders are bullish on defensive sectors such as utilities, consumer staples and healthcare.  Traders are very bearish on the broad S&P 500, Nasdaq and especially small caps.  This is after a huge rally of the Feb lows.  I think it's best to be contrarian at this juncture.