I am not sure about third war with Pakistan but there is a huge possibility of another Gujarat like massacre in India. He is a terrorist and the uniform of Prime Minister will not hide his true colour
Whether there will be hindu-muslim riots in future in India, I cannot predict, but I can tell you one thing - it will not be because of Modi or any other politician. It was people who rioted against each other, not Modi.
The words you use sometimes clouds your understanding of the real nature of events. Like you used "massacre" instead of riots. That propogates and reinforces your conviction that it was a large scale slaughter of innocent muslims by evil hindus, or satan Modi.
The reality is that it was a riot between two religious communities, where criminal minded gangs of hindus took to the streets killing muslims, and criminal minded muslims took to the street killing hindus.
The initial event that triggered those riots, the burning of 56 Kar sevaks, was a massacre, and not a riot, so your phrse "Gujarat like massacre" can only apply to that particular event of the slaughter of kar sevaks by muslims. The subsequent events were riots.
Such riots will occur in any part of India (or any other country) where neighbours live in constant hatred and/or fear of their neighbours, and deep religious polarization exists on a large scale among ordinary people. That was the case of Gujarat, and has always been the case. There has been hindu-muslim riots in Gujarat every decade since independence, sometimes every five years. The riots in 1969 were also as deadly. And guess what -
it is the first time, under Modi's leadership that Gujarat has had a riot free decade since independence. So from the available data points, wouldn't the reasonable conclusion be that communal riots will decrease, and not increase in India?
And no, he is not a terrorist, he has not killed anybody. That is just a façade that Pakistanis want to sustain, to keep alive the notion that there is an evil muslim killer in India. That façade has provided plenty of motivation materials for terrorists from across the border, who were recruited to kill Indians to avenge muslims. The akshardham attackers, the Mumbai 26/11 attackers and plenty of foot soldiers of LeT and other Pakistani-Punjabi terror groups were motivated to join by repeating this canard.
Every Indian law court has exonerated him of any charges. The worst you can say about him is that his administration failed to contain the riots quickly - and yes, that is true. However it is not just muslims who were hurt by that failure, so were hindus. And if it was any other party or chief minister in power, do you think that the riots would have ended sooner? There have been far worse riots in India before, with state forces being unable to contain them. That is an issue with the pathetic training of our law enforcement agencies.
At the end of the day, the people in that state have to take collective responsibility for the riots, instead of blaming it all on politicians. It is people who hated each other, and it is people who rioted. Why they lived in such hatred for each other for so long is what has to be probed, instead of taking the easy way out by blaming politicians.
Anyway, I will go out on a limb and make a prediction - India will not see such large scale riots anymore, irrespective of Modi coming to power or not. Two reasons - one, society has matured beyond that stage, and since Gujarat 2002 was the first televised riots, it deeply pained and embarrassed the nation. It wasn't the worst riots in India by a long margin, but it was the most publicized. A positive result of that is that society evolved beyond the traditional hatred, and socio-political discourse entered a new era. And secondly, police forces are now much better trained to handle such events, at least in all the major states. So while there will still be small communal violence here and there, whether hindu-muslim or casteist or some other religionist, the sort of widespread arson will not happen any more. Of course, this is just my guess.