general consensus...hahahahahaha ;o)
I'm afraid there will be no consensus any time soon. While food produced with pesticides kills animals in the process, it usually doesn't contain animal parts (in contrast to organic food, which may contain the odd bug or two), and would be considered vegan.
Vegan ethics & pesticide
However, many vegans choose their consumption style based on ethics (be it related to the environment or animal welfare), and won't support food produced with big amounts of pesticide (i.e. most conventionally produced food). Others may choose to be vegan based on health or taste reasons, and they wouldn't bother (except because of health concerns related to pesticides).
How unethical is pesticide use from the viewpoint of an ethically motivated vegan? Quite unethical, since not only many insects suffer and die, but also many insect-feeding animals are deprived of their original habitat (due to lack of their natural food sources), or are poisoned when eating insects that were poisoned with pesticides in the first place (bioaccumulation).
Pesticides are also harmful for humans. They pollute the ground water, and many of them are poisonous to humans. Millions of people working in agriculture, especially in the developing countries, are poisoned by pesticides in their lives, and thousands die.
How much better is organic farming in this respect? Considerably better, but still animals will suffer and die. Most organic regulations still allows some types of "organic" pesticides, and organic factory farming exists and makes use of them. Harvesting involves lots of mechanical processes that kill animals, ploughing kills animals, and so on. Farming in general sculpts the land and changes the habitat type. Where do we want to stop, then? Building a house kills animals. Drilling a tunnel kills moles. Driving your electric emission-free Tesla kills animals on the road. Walking kills insects. You have to make your personal choice at some point on how much impact you want to accept for yourself, and go with it.
I personally have made my peace with organic vegan food (i.e. without pesticides and synthetic or animal-based fertiliser). In German, the term "biovegan" is on the rise for this concept. I understand that I have some negative impact on the world just by continuing to live, and I find the amount that comes from my food consumption, acceptable. There are organic farms that don't use animal based fertilisers (see Can a modern diet be vegan, organic and sustainable?), and I buy from them. The farm makes for a better wildlife habitat than monocultures.
Invertebrates vs. vertebrates - is it bugging you?
Another thing anyone needs to find out for themselves is how much compassion one wants to bring towards insects and other invertebrates. This question is covered here: Can those who eat insects be considered vegetarians?